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QC STL 6.5 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 6.5

The QC STL PRO 6.5 is a new, energy saving model of the QuietCool whole house fans and is a great option for homes around 3,000 square feet. The Stealth Pro 6.5 is the most powerful whole house fan in the our Stealth Pro Series. Capable of a whopping 6,035 CFM this 4 speed whole house fan is also the most versatile of the series with a wide CFM range and dual duct system. This quiet giant is ideal for customers who want a single fan installed in a central hallway. The STL PRO 6.5 is best used in a multi-fan configuration with some of our lower CFM models. (Covers 3,000 sq ft)

General Specifications
Warranty 15 Years
Efficiency Hi/Hi: 569 Watts / 10.61 CFM/Watt | Hi/Lo: 344 Watts / 14.24 CFM/Watt

Hi/Off: 266 Watts / 13.65CFM/Watt | Lo/Off: 76 Watts / 30.57 CFM/Watt

Airflow Hi/Hi: 6,035 CFM | Hi/Lo: 4,897 CFM

Hi/Off: 3,630 CFM | Lo/Off: 2,323 CFM

Sound Level Hi/Hi: 50 dB | Hi/Lo: 48 dB

Hi/Off: 45 dB | Lo/Off: 43 dB

Attic Requirements 8.4 SQ FT net free area, Fits between 16″ or 24″ on center joists, No framing required
Motor Specifications
Speeds 4
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 36.25″
Outside Grill Dimensions 16″ x 38″
Shipping Info
Weight 87 Lbs.
Dimensions 42″ x 20″ x 38″
Shipping Cube 17.59
UL Listings
Motor E62815; E62788; E62862
Power Cord E55178; E147323
Handy Box E195978
Acoustic Duct UL 181


Download The Product Sheet For Our Full Inventory Of Whole House Fans

Additional information

Weight 87 kg
Dimensions 107 × 51 × 97 cm

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