Propeller Roof Fans

  • prop
  • AQD AQB
  • Standard Construction Features
  • Standard Construction Features
  •  Certifications Logo

Prop

sep-aqd

ete

Standard Construction Features

Standard Construction Features

Standard Construction Features

Standard Construction Features

AMCA-Sound & Air Cert. logo

ISO 9001, US-Green, CSA, US-C-UL, and logos -by model

Loren Cook Company Propeller Roof fans are designed for industrial and commercial and industrial supply or exhaust applications. The fans are offered in both spun aluminum and architectural tiered aluminum construction and offer performance ranging from 1,000 to 40,000 CFM. All units are produced in an ISO 9001 certified facility and are listed by Underwriters Laboratories (UL 705) and listed for Canada (cUL 705).

A-Series Cast Aluminum Airfoil Prop

  • Designed for heavy commercial or industrial applications where large volumes of air are required at low static pressures.
  • Constructed of heavy gauge aluminum with six cast blades and a cast hub.
  • Blade pitch is determined at the factory and the blades are locked into place by a roll pin.
  • Statically and dynamically balanced for vibration free operation.

E-Series Airfoil Extruded Aluminum Prop

  • Designed for use where higher static pressures are required.
  • Constructed with six extruded aluminum airfoil blades and mounted to a cast aluminum hub.
  • Blade pitch is determined at the factory and the blades are locked into place by a roll pin.
  • “E Series” blade has a non-overloading characteristic such as is found in a centrifugal type wheel.
  • Statically and dynamically balanced for vibration free operation.
Related Documents

See the Downloads tab for specifications, submittals and FanDrafter files

See also Propeller Inline
See also Propeller Upblast
See also Propeller Hooded
See also Propeller Wall Fans

  • AQD

  • AQB

  • SEP

  • ETE

  • ETES

  • Downloads

Model AQD is furnished standard with UL 705 and cUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

AQD

Roof Exhaust Fan
Cast Aluminum Propeller
Direct Drive

  • AQD is spun aluminum units that utilize the Loren Cook Company “A Series” cast aluminum propeller.
  • AQD is a direct drive unit available in 8 sizes from 12 to 48 inches. Performance ranges from 343 to 19,500 CFM with static pressures from 0 to 0.75 inches.

Description: Fan shall be a roof mounted, direct drive, downblast, cast aluminum propeller exhaust ventilator with spun aluminum top cap.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and listed for Canada (cUL 705).

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The spun aluminum structural components shall be constructed of minimum 16 gauge marine alloy aluminum, bolted to a rigid aluminum support structure. The aluminum base shall have continuously welded curb cap corners for maximum leak protection. The motor shall be mounted on a minimum 14 gauge steel power assembly, isolated from the unit structure with rubber vibration isolators. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM and static pressure. Unit shall be shipped in ISTA certified transit tested packaging.

Propeller: Propeller shall be cast aluminum airfoil design with cast aluminum hub. The blade pitch shall be factory set and locked using set screws and roll pin. The hub shall be keyed and locked to the shaft utilizing two set screws or a taper lock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be NEMA design B with a minimum of class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Product: Fan shall be model AQD as manufactured by Loren Cook Company of Springfield, Missouri.

Dimensions (Inches)

pw-xwd dimension drawing

Size A B c D Dia. TSq. Max. Motor Frame Approx. Ship.
Wt. ·lbs.
Roof Opening Square*
12 14-9/16 5-1/8 2 28-1/4 20 48T 58 15-1/2
16 16 6-1/8 2 33-1/4 28 56T 90 23-1/2
20 18-3/8 7-1/8 2 43-1/4 32 143T 155 27-1/2
24 21-5/8 9-1/8 3 47-1/2 36 145T 210 31-1/2
30 26-1/4 9-1/4 3 52-1/2 42 184T 318 37-1/2
36 27-1/4 9-3/4 3 62-1/2 48 184T 345 43-1/2
42 32-3/4 10-1/4 3 74-1/2 54 215T 418 49-1/2
48 32-3/4 10-1/4 3 74-1/2 60 215T 475 55-1/2
All dimensions in inches. Weights in pounds. *Roof opening size for curbs supplied by Cook only.

Model AQB is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

AQDB

Roof Exhaust Fan
Cast Aluminum Propeller
Belt Drive

  • AQB is spun aluminum units that utilize the Loren Cook “A Series” cast aluminum propeller.
  • AQB is a belt drive unit available in 5 sizes from 24 to 48 inches. Performance ranges from 1,165 to 16,700 CFM with static pressures from 0 to 0.50 inches.

Description: Fan shall be a roof mounted, belt driven, downblast, cast aluminum propeller exhaust ventilator with spun aluminum top cap.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and listed for Canada (cUL 705).

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The spun aluminum structural components shall be constructed of minimum 16 gauge marine alloy aluminum, bolted to a rigid aluminum support structure. The aluminum base shall have continuously welded curb cap corners for maximum leak protection. The motor, bearings and drives shall be mounted on a minimum 14 gauge steel power assembly, isolated from the unit structure with rubber vibration isolators. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM, static pressure, and maximum fan RPM. Unit shall be shipped in ISTA certified transit tested packaging.

Propeller: Propeller shall be cast aluminum airfoil design with cast aluminum hub. The blade pitch shall be factory set and locked using set screws and roll pin. The hub shall be keyed and locked to the shaft utilizing two set screws or a taper lock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans. Motor: Motor shall be Nema design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be designed and individually tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model AQB as manufactured by Loren Cook Company of Springfield, Missouri.

Dimensions (Inches)

AQB drawing
Size A B C Dia. T Sq. Maximum Motor Frame Approx. Ship.Wt. - lbs. Roof Opening Square*
24 24-7/8 6-1/8 47-1/2 36 143T 175 31-1/2
30 26-1/4 6-1/4 52-1/2 42 145T 218 37-1/2
36 27-1/4 6-3/4 62-1/2 48 145T 265 43-1/2
42 32-3/4 7-1/4 74-1/2 54 182T 318 49-1/2
48 32-3/4 7-1/4 74-1/2 60 184T 360 55-1/2

All dimensions in inches. Weights in pounds, less motor. *Roof opening size for curbs supplied by Cook only.

Model SEP is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

SEP 

Exhaust and Supply Roof Fan
Cast Aluminum Propeller
Belt Drive

  • SEP is a spun aluminum unit that utilizes the Loren Cook “A Series” cast aluminum reversible propeller.
  • SEP is electrically reversible in the field. SEP is a belt drive unit available in 5 sizes from 24 to 48 inches. Performance ranges from 1,017 to 20,800 CFM with static pressures from 0 to 0.50 inch.

Description: Fan shall be a roof mounted, belt driven, cast aluminum propeller, reversible exhaust and supply ventilator with spun aluminum top cap.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and listed for Canada (cUL 705).

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The spun aluminum structural components shall be constructed of minimum 16 gauge marine alloy aluminum, bolted to a rigid aluminum support structure. The aluminum base shall have continuously welded curb cap corners for maximum leak protection. The motor, bearings and drives shall be mounted on a minimum 14 gauge steel power assembly, isolated from the unit structure with rubber vibration isolators. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM, static pressure, and maximum fan RPM. Unit shall be shipped in ISTA certified transit tested packaging.

Propeller: Propeller shall be a reversible, cast aluminum airfoil design with cast aluminum hub. The blade pitch shall be factory set and locked using set screws and roll pin. The hub shall be keyed and attached to the shaft utilizing two set screws or a taper lock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be NEMA design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be designed and individually tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model SEP as manufactured byLoren Cook Company of Springfield, Missouri.

Dimensions (Inches)

sEP drawing
Size A B C Dia. T Sq. Maximum Motor Frame Approx. Ship.Wt. - lbs. Roof Opening Square*
24 47-1/2 24-7/8 6-1/8 3 36 175 31-1/2
30 52-1/2 26-1/4 6-1/4 3 42 218 37-1/2
36 62-1/2 27-1/4 6-3/4 3 48 265 43-1/2
42 74-1/2 32-3/4 7-1/4 3 54 318 49-1/2
48 74-1/2 32-3/4 7-1/4 3 60 360 55-1/2
All dimensions in inches. Weights in pounds, less motor. * Roof opening size for curbs supplied by Cook only.

Model ETE is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

ETE 

Tiered Exhaust Fan
Extruded Aluminum Propeller
Belt Drive

  • ETE is a tiered aluminum units that utilizes the Loren Cook “E Series” extruded aluminum airfoil propeller.
  • ETE is a belt drive exhaust unit available in 7 sizes from 24 to 60 inches. Performance ranges from 1,218 to 42,100 CFM with static pressures from 0 to 0.50 inches.

Description - Fan shall be a tiered aluminum hooded, roof mounted, belt driven, propeller exhaust fan.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705).

Construction: The fan shall be of bolted construction utilizing corrosion resistant fasteners. Hood shall be tiered extruded aluminum. The motor, bearings and drives shall be mounted on a welded tubular steel power assembly. The power assembly shall be rigidly secured to the fan housing. The fan housing shall include a minimum 14 gauge base with integral spun venturi and continuously welded curb cap corners. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM, static pressure, and maximum fan RPM. Unit shall be shipped in ISTA certified transit tested packaging.

Coating: All ungalvanized steel fan components shall be Lorenized™ with an electrostatically applied, baked polyester powder coating. Each component shall be subject to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be extruded aluminum airfoil design with cast aluminum hub. The blade pitch shall be factory set and locked using set screws and roll pin. The hub shall be keyed and securely attached to the shaft utilizing two set screws or a taper lock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be Nema design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be designed and individually tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model ETE as manufactured by Loren Cook Company of Springfield, Missouri.

Dimensions (Inches)

pw-xphd diminsion drawing
Size A Sq B C No.
Tiers
T Sq. Maximum Motor Frame Approx. Ship.Wt. - lbs. Roof Opening Square*
24 40-3/4 34-1/4 12-1/2 5 36 182T 290 31-1/2
30 46-3/4 34-1/4 12-1/2 5 42 184T 355 37-1/2
36 52-3/4 41-1/4 12-1/2 7 48 215T 455 43-1/2
42 58-3/4 45 16-1/4 7 54 215T 585 49-1/2
48 64-3/4 52 16-1/4 9 60 254T 710 55-1/2
54 70-3/4 56-1/2 17-1/4 10 66 256T 850 61-1/2
60 76-3/4 63-1/2 17-1/4 12 72 256T 985 67-1/2
All dimensions in inches. Weights in pounds, less motor. * Roof opening size for curbs supplied by Cook only.

Model ETS is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

ETES

Tiered Filtered Supply Fan
Extruded Aluminum Propeller
Belt Drive

  • ETES is a tiered aluminum units that utilizes the Loren Cook “E Series” extruded aluminum airfoil propeller.
  • ETES is a belt drive supply unit available in 7 sizes from 24 to 60 inches. Performance ranges from 1,096 to 37,900 CFM with static pressures from 0 to 0.50 inches.

Description: Fan shall be a tiered aluminum hooded, filtered, roof mounted, belt driven, propeller supply fan.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705).

Construction: The fan shall be of bolted construction utilizing corrosion resistant fasteners. Hood shall be tiered extruded aluminum. The motor, bearings and drives shall be mounted on a welded tubular steel power assembly. The power assembly shall be rigidly secured to the fan housing. The fan housing shall include a minimum 14 gauge steel base with integral spun venturi and continuously welded curb cap corners. Filters shall be washable expanded aluminum media with two inch formed aluminum frame. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM, static pressure, and maximum fan RPM. Unit shall be shipped in ISTA certified transit tested packaging.

Coating: All ungalvanized steel fan components shall be Lorenized™ with an electrostatically applied, baked polyester powder coating. Each component shall be subject to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be extruded aluminum airfoil design with cast aluminum hub. The blade pitch shall be factory set and locked using set screws and roll pin. The hub shall be keyed and securely attached to the shaft utilizing two set screws or a taper lock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be Nema design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be designed and individually tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model ETS as manufactured by Loren Cook Company of Springfield, Missouri.

Dimensions (Inches)

pw-xphd diminsion drawing
Size A Sq B C No.
Tiers
T Sq. Maximum
Motor Frame
Approx.
Ship.
Wt. - lbs.
Roof Opening Square* Filter Size Filter
Area
(sq. ft.)
24 40-3/4 34-1/4 12-1/2 5 36 182T 324 31-1/2 18-7/8 x 29-3/8 13.1
30 46-3/4 34-1/4 12-1/2 5 42 184T 402 37-1/2 18-7/8 x 35-3/8 16
36 52-3/4 41-1/4 12-1/2 7 48 215T 515 43-1/2 19-5/8 x 25-7/8 24
42 58-3/4 45 16-1/4 7 54 215T 663 49-1/2 22-5/8 x 25-7/8 28
48 64-3/4 52 16-1/4 9 60 254T 800 55-1/2 25-3/8 x 32-7/8 40.9
54 70-3/4 56-1/2 17-1/4 10 66 256T 956 61-1/2 18-3/16 x 28-5/8 49
60 76-3/4 63-1/2 17-1/4 12 72 256T 1132 67-1/2 21-11/16 x 31-1/2 65.9
All dimensions in inches. Weights in pounds, less motor. * Roof opening size for curbs supplied by Cook only.