Gemini: Centrifugal Ceiling-Wall Cabinet Fan

  • Gemini 100
  • Gemini 200
  • Gemini 800
  • Gemini 1000
  • Gemini 122-184
  • Gemini 200 Inline
  • Gemini 800 Inline
  • Gemini 1000 Inline
  • Standard Construction Features
  • Standard Construction Features
  • ISO 9001, US-Green, AMCA Sound & Air, CSA, US-C-UL, and logos
Gemini 100

Gemini 100

Gemini 200

Gemini 200

Gemini 800

Gemini 800

Gemini 1000

Gemini 1000

Gemini 122_184

Gemini 122-184 Inline

Gemini 200 Inline

Gemini 200 Inline

Gemini 800 Inline

Gemini 800 Inline

Gemini 1000

Gemini 1000 Inline

Standard Construction Features

Standard Construction Features

Standard Construction Features

Standard Construction Features

Certifications Logos

Certifications, vary by model

Loren Cook Gemini fans provide maximum performance, durability, and ease of installation in a wide variety of ceiling and inline clean air exhaust applications.Gemini fans are easily field convertible from ceiling to inline or inline to ceiling depending on the installation needs. All units are tested in COOK's AMCA registered laboratory in accordance with AMCA Standards and are licensed to bear the AMCA Certified Ratings Seal. All Gemini units are listed by Underwriters Laboratory (UL 705) and UL listed for Canada (cUL 705). For optional UL listings, refer to page 10 of this catalog.

Related Documents

See the Downloads tab for Specifications, Submittals, and FanDrafter files

See also DB Duct Blowers / Cabinet Fans
See also CBF Cinder Block


  • GC 122-184

  • GC 220-960

  • GC 1000-2000

  • GN 122-184

  • GN 220-960

  • GN 1000-2000

  • Options & Accessories

  • Installation

  • Downloads

CPV

LOREN COOK COMPANY certifies that the Gemini GC 122-184 are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311, and comply with requirements of the AMCA Certified Ratings Program.

Type Gemini GC 122-184 are furnished standard with UL 705 & cUL 705 listing (Power Ventilator/ZACT).

All sizes are available with express service. Read more.

Gemini GC 122-184

Ceiling Fans

  • Performance ranges from 50 to 250 CFM
  • SP: 0 - .875 in
  • Eight different performance ranges are available using four different two-speed motors all in one fan size.
  • Fans sized to exceed mechanical code applications of 75 CFM per water closet in small public washrooms.

Description: Fan shall be ceiling mounted, direct driven, centrifugal exhaust fan.

Certifications: Fan shall be manufactured by an ISO 9001 certified company. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705) or UL Laboratories (UL 507) and UL listed for Canada (cUL 507). Fan shall bear the AMCA Certified Ratings Seal for sound and air performance.

Construction: Fan wheel housing and integral outlet duct collar shall be injection molded from a specially engineered resin exceeding UL requirements for smoke and heat generation. The outlet duct shall have provision for an aluminum backdraft damper with continuous aluminum hinge rod. The inlet box shall be minimum 22 gauge galvanized steel. Motor shall be isolation mounted to a one piece galvanized stamped steel integral motor mount/inlet. A field wiring compartment with disconnect receptacle shall be standard. To accommodate different ceiling thickness, an adjustable prepunched mounting bracket shall be provided. A white, non-yellowing, high impact styrene injection molded grille shall be provided as standard. Unit shall be designed with provision for field conversion from ceiling to inline. Unit shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be centrifugal forward curved type, injection molded of polypropylene resin. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be open drip proof type with permanently lubricated sealed bearings and include impedance or thermal overload protection and disconnect plug. Motor shall be furnished at the specified voltage.

Product: Fan shall be model Gemini GC 122-184 as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (inches)

 

ACEd dimension drawing
Grille Material A
Plastic 13-1/4
Steel 13-1/2
Aluminum 13-3/4
 
Unit Size Approx. Ship-Wt. Lbs.
122/124 13
142/144 15
162/164 15
182/184 16

Gemini 200

GC 220 - 740

gemini 800

GC 822 - 960

LOREN COOK COMPANY certifies that the Gemini GC 220-960 are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311, and comply with requirements of the AMCA Certified Ratings Program.



Type Gemini GC 220-960 are furnished standard with UL 705 & cUL 705 listing (Power Ventilator/ZACT).


All sizes are available with express service. Read more.

Gemini GC 220-960

Ceiling Fans

  • 200-700
    • Performance ranges from 75 to 850 CFM
    • SP: 0 to 7/8 inches.
    • The Gemini 200-700 series fans are single scroll fans.
  • 800-900
    • Performance ranges from 680 to 1800 CFM
    • SP: 0 to 5/8 inches.
    • The Gemini 800-900 series fans are double scroll fans.

Description: Fan shall be ceiling, wall, or inline mounted, direct drive, centrifugal exhaust fan.

Certifications: Fan shall be manufactured by an ISO 9001 certified company. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for sound and air performance.

Construction: Fan housing shall be minimum 20 gauge galvanized steel and acoustically insulated. Blower and motor assembly shall be mounted to a minimum 14 gauge reinforcing channel and shall be easily removable from the housing. Motor shall be mounted on vibration isolators. Unit shall be supplied with integral wiring box and disconnect receptacle shall be standard. Discharge position shall be convertible from right angle to straight through by moving interchangeable panels. The outlet duct collar shall include a reinforced aluminum damper with continuous aluminum hinge rod and nylon bushings. To accommodate different ceiling thickness, an adjustable prepunched mounting bracket shall be provided. A white, non-yellowing, high impact styrene injection molded grille shall be provided as standard on 200 and 300 series. A powder painted white steel grille shall be provided as standard on 800-900 series. Unit shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be centrifugal forward curved type, constructed of galvanized steel. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be open drip proof type with permanently lubricated sealed bearings, built-in thermal overload protection and disconnect plug. Motor shall be furnished at the specified voltage.

Product: Fan shall be model Gemini GC 220-960 as manufactured by LOREN COOK COMPANY of Springfield, Missouri.


Dimensions (inches)
 dimension drawing

 

Model Housing Outlet Plastic Grille Steel Grille Deluxe Aluminum Grille Approx. Ship-Wt. Lbs.
L W H A B J K J K J K
220, 240 12-3/08 9/3/04 9-3/04 8 6 15-1/2 13-1/4 16-3/8 13-5/8 14-1/4 11 22
320, 340 12-3/08 10-3/04 10-3/04 8 6 14-1/4 12-1/04 25
420 17 11-7/08 11-7/08 8 6 - - 21 14-1/4 18-3/4 13-3/4 30
520 17 11-7/08 11-7/08 8 6 21 14-1/4 18-3/4 13-3/4 32
620, 640 17 11-7/08 11-7/08 10-1/02 4-3/04 21 14-1/4 18-3/4 13-3/4 35
720, 740 17 11-7/08 11-7/08 10-1/02 4-3/04 21 14-1/4 18-3/4 13-3/4 36
822, 842, 862 27 14-11/16 14-11/16 20 6 31-3/8 17-1/8 28-3/4 16-1/4 74
920, 940, 960 31 14-11/16 14-11/16 24-1/4 6 35-1/8 17-1/8 32-3/4 16-1/4 86
Gemini 200

LOREN COOK COMPANY certifies that the Gemini 1000 and 2000 series are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.



Type Gemini GC 1000 and 2000 are furnished standard with UL 705 & cUL 705 listing (Power Ventilator/ZACT).


All sizes are available with express service. Read more.

Gemini GC 1000-2000

Ceiling Fans

  • Performance ranges from 1030 to 3470 CFM
  • SP: 1/10 to 7/8 inches.
  • The Gemini 1000-2000 series fans are double scroll fans.
  • Motors are single speed.
  • Motors available in single or three phase.

Description: Fan shall be ceiling, wall, or inline mounted, direct drive, centrifugal exhaust fan.

Certifications: Fan shall be manufactured by an ISO 9001 certified company. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for air performance.

Construction: Fan housing shall be minimum 20 gauge galvanized steel and acoustically insulated. Blower and motor assembly shall be mounted to a minimum 14 gauge reinforcing channel. Motor shall be resiliently mounted. Unit shall be supplied with integral wiring box. Discharge position shall be convertible from right angle to straight through by moving interchangeable panels. The outlet duct collar shall include reinforced aluminum dampers with continuous aluminum hinge rods and nylon bushings. To accommodate different ceiling thickness, an adjustable pre-punched mounting bracket shall be provided. A powder painted white steel grille shall be provided as standard. Unit shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheels shall be twin DWDI centrifugal forward curved type, constructed of galvanized steel. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be totally enclosed type with permanently lubricated sealed bearings and built-in thermal overload protection. Motor shall be furnished at the specified voltage and phase.

Product: Fan shall be model GC 1000 and GC 2000 as manufactured by LOREN COOK COMPANY of Springfield, Missouri.


Dimensions (inches)
 dimension drawing

 

Model Housing Outlet Steel Grille Deluxe Aluminum Grille Approx. Ship-Wt. Lbs
L W H A B J K J K
1000 38-1/8 15-1/4 15-1/4 33-11/16 7-11/16 42-3/8 17-1/8 38-3/4 15-3/4 125
2000 45-7/16 16-5/8 16-5/8 41-1/8 9-5/08 49-1/2 18-1/2 45-3/4 17-1/4 165
Gemini 122_184

LOREN COOK COMPANY certifies that the Gemini GN 122-184 are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311, and comply with requirements of the AMCA Certified Ratings Program.



Type Gemini GN 122-184 are furnished standard with UL 705 & cUL 705 listing (Power Ventilator/ZACT).

All sizes are available with express service. Read more.

Gemini GN 122-184

Inline Fans

  • Performance ranges from 50 to 250 CFM,
  • SP: 0 - .875 in
  • Eight different performance ranges are available using four different two-speed motors all in one fan size.
  • Fans sized to exceed mechanical code applications of 75 CFM per water closet in small public washrooms.

Description: Fan shall be inline mounted, direct drive, centrifugal exhaust fan.

Certifications: Fan shall be manufactured by an ISO 9001 certified company. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for sound and air performance.

Construction: Fan wheel housing and integral outlet duct collar shall be injection molded from a specially engineered resin exceeding UL requirements for smoke and heat generation. The outlet duct shall have provision for an aluminum backdraft damper with continuous aluminum hinge rod. The inlet box shall be minimum 22 gauge galvanized steel. Motor shall be isolation mounted to a one piece galvanized stamped steel integral motor mount/inlet. A field wiring compartment with disconnect receptacle shall be standard. To accommodate different mounting positions, an adjustable prepunched mounting bracket shall be provided. Unit shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be centrifugal forward curved type, injection molded of polypropylene resin. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be open drip proof type with permanently lubricated sealed bearings and include impedance or thermal overload protection and disconnect plug. Motor shall be furnished at the specified voltage and phase.

Product: Fan shall be model Gemini GN 122-184 as manufactured by LOREN COOK COMPANY of Springfield, Missouri.


Dimensions (inches)
 dimension drawing

Model GN Approx. Ship-Wt. Lbs.
GN-122/GN-124 15
GN-142/GN-144 15
GN-162/GN-164 16
GN-182/GN-184 16

Gemini 200

LOREN COOK COMPANY certifies that the Gemini GC 220-960 are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311, and comply with requirements of the AMCA Certified Ratings Program.



Type Gemini GC 220-960 are furnished standard with UL 705 & cUL 705 listing (Power Ventilator/ZACT).


All sizes are available with express service. Read more.

Gemini GN 220-960

Inline Fans

  • Performance ranges from 75 to 850 CFM
  • SP: 0 - .875 in
  • The Gemini 200-700 series fans are single scroll fans.

Description: Fan shall be ceiling, wall, or inline mounted, direct drive, centrifugal exhaust fan.

Certifications: Fan shall be manufactured by an ISO 9001 certified company. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for sound and air performance.

Construction: Fan housing shall be minimum 20 gauge galvanized steel and acoustically insulated. Blower and motor assembly shall be mounted to a minimum 14 gauge reinforcing channel and shall be easily removable from the housing. Motor shall be mounted on vibration isolators. Unit shall be supplied with integral wiring box and disconnect receptacle shall be standard. Discharge position shall be convertible from right angle to straight through by moving interchangeable panels. The outlet duct collar shall include a reinforced aluminum damper with continuous aluminum hinge rod and nylon bushings. To accommodate different ceiling thickness, an adjustable prepunched mounting bracket shall be provided. A white, non-yellowing, high impact styrene injection molded grille shall be provided as standard on 200 and 300 series. A powder painted white steel grille shall be provided as standard on 800-900 series. Unit shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be centrifugal forward curved type, constructed of galvanized steel. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be open drip proof type with permanently lubricated sealed bearings, built-in thermal overload protection and disconnect plug. Motor shall be furnished at the specified voltage.

Product: Fan shall be model Gemini GC 220-960 as manufactured by LOREN COOK COMPANY of Springfield, Missouri.


Dimensions (inches)
 dimension drawing

 

Model Housing Outlet Plastic Grille Steel Grille Deluxe Aluminum Grille Approx. Ship-Wt. Lbs
L W H A B J K J K J K
220, 240 12-3/08 9-3/04 9-3/04 8 6 15-1/2 13-1/4 16-3/8 13-5/8 14-1/4 11 22
320, 340 12-3/08 10-3/04 10-3/04 8 6 14-1/4 12-1/04 25
420 17 11-7/08 11-7/08 8 6 - - 21 14-1/4 18-3/4 13-3/4 30
520 17 11-7/08 11-7/08 8 6 21 14-1/4 18-3/4 13-3/4 32
620, 640 17 11-7/08 11-7/08 10-1/02 4-3/04 21 14-1/4 18-3/4 13-3/4 35
720, 740 17 11-7/08 11-7/08 10-1/02 4-3/04 21 14-1/4 18-3/4 13-3/4 36
822, 842, 862 27 14-11/16 14-11/16 20 6 31-3/8 17-1/8 28-3/4 16-1/4 74
920, 940, 960 31 14-11/16 14-11/16 24-1/4 6 35-1/8 17-1/8 32-3/4 16-1/4 86
Gemini 200

LOREN COOK COMPANY certifies that the Gemini 1000 and 2000 series are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.



Type Gemini GC 220-960 are furnished standard with UL 705 & cUL 705 listing (Power Ventilator/ZACT).


All sizes are available with express service. Read more.

Gemini GN 1000-2000

Inline Fans

  • Performance ranges from 1030 to 3470 CFM
  • SP 1/10 to 7/8 inches.
  • The Gemini 1000-2000 series fans are double scroll fans.
  • Motors are single speed.
  • Motors available in single or three phase.

Description: Fan shall be ceiling, wall, or inline mounted, direct drive, centrifugal exhaust fan.

Certifications: Fan shall be manufactured by an ISO 9001 certified company. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for air performance.

Construction - Fan housing shall be minimum 20 gauge galvanized steel and acoustically insulated. Blower and motor assembly shall be mounted to a minimum 14 gauge reinforcing channel. Motor shall be resiliently mounted. Unit shall be supplied with integral wiring box. Discharge position shall be convertible from right angle to straight through by moving interchangeable panels. The outlet duct collar shall include reinforced aluminum dampers with continuous aluminum hinge rods and nylon bushings. To accommodate different ceiling thickness, an adjustable pre-punched mounting bracket shall be provided. A powder painted white steel grille shall be provided as standard. Unit shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheels shall be twin DWDI centrifugal forward curved type, constructed of galvanized steel. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be totally enclosed type with permanently lubricated sealed bearings and built-in thermal overload protection. Motor shall be furnished at the specified voltage and phase.

Product: Fan shall be model GC 1000 and GC 2000 as manufactured by LOREN COOK COMPANY of Springfield, Missouri.


Dimensions (inches)
 dimension drawing

 

Model Housing Outlet Steel Grille Approx. Ship-Wt. Lbs
L W H A B J K
GN-1000 38-1/8 15-1/4 15-1/4 33-11/16 7-11/16 42-3/8 17-1/8 125
GN-2000 45-7/16 16-5/8 16-5/8 41-1/8 9-5/08 49-1/2 18-1/2 165

Fan speed controlFan Speed Control COOK's FSC is a variable speed controller which can offer excellent energy conservation and lower sound levels when 100 percent of a direct drive fan operating capacity is not required. The FSC employs solid state circuitry for long life and dependability. The FSC is available only on 115V and 230V shaded pole or permanent split capacitor direct drive motors and is not available on 1140 RPM and 1725 RPM motors. The FSC is normally shipped loose for field installation. Optional pre-wiring is available.


Motion_sensorMotion Sensor The wall or ceiling mount passive infrared motion sensor will automatically turn on the fan when the room is occupied. Each of the sensors feature an adjustable time delay of 20 seconds to 30 minutes allowing the fan to continue to run after the room is no longer occupied up to the chosen setting. With this accessory, energy and air demands of the building will be reduced. The sensor must be installed in a 2x4 handy box and should be mounted within the line-of sight of the occupant. Maximum sensor coverage is 1200 square feet. Shipped loose for field installation.


Time Delay Switch The time delay switch operates both the fan and room light. Moving the switch to the "on" position turns the light & fan on immediately. Both light and fan stay on until the switch is moved to the "off" position. When the switch is moved to the "off" position, power to the light is immediately ceased and the fan will power down 1 to 60 minutes dependent upon the adjustable delay.


277 Volt Transformer The 277 Volt Transformer is available for the Gemini 220 - 960 series. This step-down transformer allows for the operation of a Gemini fan from a 277 volt source. It is shipped loose for field installation.


UL Listing Gemini 100 series is available with UL 507 listing (Electical Fans) and with cUL 507 listing for Canada. UL 507 units are suitable for use over tub and showers when installed in a GFCI protected branch circuit. Gemini 200 through 2000 series units are available with UL 1995 listing (Heating & Cooling Equipment) and cUL 1995 listing for Cananda. When a Gemini 200 - 2000 unit is supplying a separate modular cooling or heating source then UL 1995 listing may be required by local code.


Gemini Hanging Isolator Kit The Gemini Hanging Isolator Kit is used for Gemini ceiling and inline units 122 through 740. Bushings are made of resilient thermoplastic. The bushings and eyelets are sized to be used with common 1/4" x 20 all thread. Standard Gemini mounting brackets easily accommodate the isolator bushings. Flanged nuts eliminate the need for additional washers and provide for a more simplified field assembly. Rated Load 160 lbs


IsolatorRubber In Shear Isolator Rated Load 75 lbs
Spring Isolator - Ceiling Mounted Unit. Rated Load/Spring Rate 35 lbs/23 lbs. per in OR 70 lbs/51 lbs. per in


Deluxe Aluminum Grille LOREN COOK COMPANY offers aluminum grilles for Gemini fans in an attractive, architectural style. These grilles are available in painted white or aluminum finish. The deluxe aluminum grille is not available on GC-1000 or GC-2000 units.

Steel Grille A painted steel grille is available for the 100, 200, and 300 series fan whenever a steel grille is desired for cosmetic reasons.


Ceiling radiation damperCeiling Radiation Damper (inches)

GeminiSeries ModelNo. A B C D
122-184 CRD1 14-1/2 12-3/8 6-3/16 4-3/16
220-240 CRD2 12-5/8 10-1/8 5-1/16 4-3/16
320-340 CRD3 12-5/8 11-1/8 5-9/16 4-3/16
420-740 CRD4 17-5/8 12-1/4 6-1/08 4-3/16



filterUnit Filter The grille mounted unit filter is a washable aluminum mesh filter which is placed between the grille and the unit. This filter reduces the accumulation of dirt build-up on the motor and the fan wheel. Dirt build-up on the motor can cause the motor to overheat and fail. Dirt build-up on the fan wheel can reduce performance and cause imbalance which leads to higher noise levels.


filterFilter Box The Gemini Filter Box can be mounted either directly before the Gemini N-Line fan or remotely in the duct work. The Gemini filter box features a removable filter drawer and a washable filter media. The Gemini filter box is constructed of corrosion resistant galvanized steel. Other filter media is available by consulting the factory.

Unit Filter A B C
220, 240 GFB-200 12-1/16 9-7/16 5
320, 340 GFB-300 12-1/16 10-7/16 5
420-740 GFB-400 -GFB-700 16-11/16 11-11/16 6
822, 842, 862 GFB-800 26-3/4 14-1/4 6
920, 940, 960 GFB-900 30-3/4 14-1/4 6
1000 GFB-1000 37-11/16 14-1/4 6
2000 GFB-2000 45-3/16 15-7/8 6


Brick VentBrick Vent All dimensions in inches. Frame and blades are constructed from .125" thick materials. Designed for maximum protection against water entering building with 4" deep frame and 45 degree blades. The vents come standard with clear anodized finish.

GeminiSeries Model No. A B C
122-184 BV1 4-3/04 16-1/2 4
220-420 BV2 4-3/04 16-1/2 4
520-720 BV5 7-3/04 16-1/2 4
822-1000 BV8 24 24 2
2000 BV20 30 30 2


ceiling to inlineinline to ceilingConversion Kits The Gemini Conversion Kits include all the necessary components to field convert a Gemini 100 series fan from a ceiling to inline installation, or vice versa.


Round Duct Wall CapRound Duct Wall Cap with Damper All dimensions in inches. Standard construction features - Corrosion resistant aluminum with integral aluminum backdraft damper.

Unit Accessory Model A B C D E
122-340 WCR6-Alum. 8 7 6 8-1/2 12-3/4
220-520 WCR8-Alum. 10 9 8 8-1/2 14-1/4

Round Duct Round Duct Adapter The Gemini 200-500 can be field converted from a rectangular outlet to a round outlet by removing the rectangular damper frame and replacing it with the round duct adaptor.


Roof JackRoof Jack All dimensions in inches. Standard Construction Features - Corrosion resistant galvanized steel with black baked enamel finish, 1/2" birdscreen. Optional Roof Jack Adapter is available for the RJ200. The Roof Jack Adapter is a transition from the Gemini Fan to the Roof Jack. The RJR100 has an integral 6 inch round adapter for ease of installation of duct.

Unit Accessory Model  A B C D E Throat Size 
122-184 RJR100 14-1/4 18-3/4 10-3/8 14-1/2 6-1/02 6 Dia.
220-520 RJ200 14-1/4 18-3/4 10-3/8 14-1/2 6-1/02 10-1/4 X 10-3/4


roof capRoof Cap All dimensions in inches. Standard Construction Features - All aluminum construction, anti-backdraft flange. Available with optional birdscreen. PR8F, PR12F and PR20F mount directly on the roof with integral flashing. PR8, PR12, PR16 and PR20 are curb mount.

Unit Accessory Model Type A B C Throat Size
122-520 PR8 Curb Mount 18-1/4 10-1/8 18 8-19/32
PR8F Flat Base 18-1/4 8-1/8 18 8-19/32
620-740 PR12 Curb Mount 28-1/4 10-5/16 20 12-1/2
PR12F Flat Base 28-1/4 8-5/16 20 12-1/2
822-960 PR16 Curb Mount 28-1/4 8-5/16 28 16-1/2
PR16F Flat Base 28-1/4 10-5/8 28 16-1/2
1000-2000 PR20 Curb Mount 36-1/2 13-5/8 32 20-1/2
PR20F Flat Base 36-1/2 11-5/8 32 20-1/2



Eave Elbow Eave Elbow All dimensions in inches.

GeminiSeries Type Model No. A B C D
220-520 Short SE 2 8-1/8 12-1/4 12-1/4 6-1/8
220-520 Long LE 2 8-1/8 15-1/2 14 6-1/8


Wall CapWall Cap All dimensions in inches. Standard Construction Features - Corrosion resistant galvanized steel or aluminum, 1/2" birdscreen.

Accessory Model A B C D
Galv. Alum.
220-520 WCG-2 WCA-2 10-5/16 7-3/16 6-3/8 8-5/16
620-740 WCG-6 WCA-6 12-13/16 6 5 10-13/16
822-860 WCG-8 WCA-8 22-5/16 7-3/16 6-3/16 20-5/16
920-960 WCG-9 WCA-9 26-9/16 7-15/16 6-15/16 24-9/16


curbcurbRoof Curb All dimensions in inches. Gravity dampers are not recommended with the Gemini fans. Motorized dampers are available, by consulting factory. Sound curbs available. Contact factory for dimensions.

Roof cap Accessory Model F Sq. V Sq. W Sq. Roof 
Galv. Alum.
PR8
PR8F
RCG-16 RCA-16 16-1/2 20-1/2 9/3/2004 13-1/2
PR12
PR12F
RCG-18 RCA-18 18-1/2 22-1/2 11/3/2004 15-1/2
PR16
PR16F
RCG-26 RCA-26 26-1/2 30-1/2 19-3/4 23-1/2
PR20
PR20F
RCG-30 RCA-30 30-1/2 34-1/2 23-3/4 27-1/2


Motor The Gemini fans can be specified to meet different line voltages. The Gemini 100 series is available in standard 115-volt. Contact factory for other voltages available. The Gemini 200-900 series are available in standard 115-volt or optional 220/240 volt. The Gemini 1000 and 2000 are available in single-phase 115/208-230 volt or three-phase 208-230/460.

Gemini GC 100 SeriesGC 100 Series installation

Gemini 200 - 2000 Ceiling and Inline Series
The Gemini 200 - 2000 ceiling and inline series of fans can be installed as a standard ceiling installation or as an inline installation. The fan can be converted in the field from a standard ceiling construction to an inline construction. Airflow is illustrated by the black arrows. Shaded areas illustrate ductwork furnished by the installer. GC 100 Series installationGC 100 Series installation

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