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QC STL PRO 3.3 Stealth Pro Series Whole House Fan Direct Electric Company


The new Stealth Pro Series line of QuietCool fans is an installer-exclusive product. Manufactured with the Energy Saving ECM Motor, they provide substantial energy cost savings. The Stealth series fans are powerful, providing coverage of 1,488-6,035 cubic feet per minute, 750-3,000 square feet and can be installed in various areas of the home. Check out the different Stealth Pro models below to find the best one for you!

QuietCool QC STL PRO 3.3

The QC STL PRO 3.3 is a new, energy saving model of the QuietCool whole house fans and is a great option for homes ranging in size from 1000 – 1300 square feet. This model moves up to 3,123 CFM throughout your home. Furthermore, this fan is perfect for large areas such as a large living room, den, loft or hallways. Typically you would have 2 or more fans in larger homes.  This is a 2 speed whole house fan that can cover up to 1,500 square feet.

General Specifications
Warranty 15 Years
Efficiency Hi: 264 Watts /11.83 CFM/Watt | Low: 75 Watts / 27.07 CFM/Watt
Airflow Hi: 3,123 CFM | Low: 2,030 CFM Low
Sound Level 47 dB
Attic Requirements 4.2 SQ FT net free area, Fits between 16″ or 24″ on center joists, No framing required
Motor Specifications
Speeds 2
Voltage 120 V. AC, 60Hz
Housing Diameter 16.5″
Housing Length 13.5″
Duct Specifications
Duct Diameter 16″
Duct Length 6′
Damper & Grill
Dampers Barometric Pressurized R-5 Dampers
R-Value R5 (R45 w/ optional winterized insert)
Rough Ceiling Opening 14.25″ x 22.25″
Outside Grill Dimensions 16″ x 32″
Shipping Info
Weight 47 lbs.
Dimensions 38″ x 20″ x 27″
Shipping Cube 11.44
UL Listings
Motor E62815; E62788; E62862
Power Cord ETL 3171583
Handy Box E195978
Acoustic Duct UL 181


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Additional information

Weight 47 kg
Dimensions 97 × 51 × 69 cm

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