The uber-versatile, three-speed, single motor "clydesdale" STL 4.0 compliments the Classic Line QC 4500 but at a puny 541 motor watts, on high speed. This terrific fan operates at three speeds: low, using 66 watts at 1605 CFM; medium, using 208 watts at 2850 CFM; and high, using 514 watts at 4094 CFM.

Using the ES line of motors, the additional STL models provide maximum air flow coverage for all room and area configurations.

The uber-versatile, three-speed, single motor "clydesdale" STL 4.0 compliments the Classic Line QC 4500 but at a puny 541 motor watts, on high speed. This terrific fan operates at three speeds: low, using 66 watts at 1605 CFM; medium, using 208 watts at 2850 CFM; and high, using 514 watts at 4094 CFM.

In every configuration, dealers can mix and match our ES and STL motors for perfectly zoned coverage with the industry's most energy efficient fans, all of which sit atop the California Energy Commission "Appliance Efficiency Database" as the most energy efficient fans on the market.

As we like to say, if it doesn't say "QuietCool" on the motor, it's just another fan! But more ---- these say "Stealth," the best of the best offered by QuietCool.

Specifications

Motor Voltage 120 V. AC, 60 Hz 3 SPEED

Energy Use Low Watts 66, Med Watts 208, High Watts 514

Air Flow Low CFM 1605, Med 2850, High 4094

CFM/Watt- Efficiency Rating Low 24.3, Med 13.7, High 8.0

Square Foot Coverage @ 2 CFM per SQ FT Covers up to 2050 SQ FT

# of Speeds 3 Speed

Duct Diameter 16"

Duct Length 6 feet

Motor Head Diameter 16 1/2"

Motor Head Length 19"

Sound Level in Room "Acoustical" 49 db

R Value at Closed Damper R 4.2

Dampers Air Tight Insulated Dampers

Controls Hard Wire Capabilties

Warranty 15 Years

Framing None Required

Fits between "16 or 24" on Center Joists No Joist Cutting Necessary

Minimum Suggested Attic Venting 5.3 SQ FT net free area

Ceiling Rough Opening 14 1/4" X 22 1/4"

Ceiling Grill Outside Dimension 16" x 24"

Ceiling Grill Color White- High Volume Air Flow

Shipping Weight27 Lbs. and 19 Lbs. (two boxes)

Ship Carton Dimensions 24" x 23" x 22" and 21" x 17" x 17" (two boxes)

Ship Carton Cube 7.0 and 3.5 (two boxes)

UL Component UL Listing Numbers

Motor E62815; E62788; E62862

Housing ETL 3171583

Power Cord ETL 3171583

Acoustic Duct MH11637