QuietCool Stealth Pro Line

QC STL PRO-3.3X Specifications

Motor Voltage120 VAC, 60 Hz
Energy UseHi: 264 Watts / Low: 74.6 Watts
Air FlowHi: 3159 CFM / Low: 1980 CFM
HVI-916 Airflow (for CA Title 24 New Construction)2350 CFM
dBAHi: 47.4 / Low: 36.1
Recommended SQFT Coverage @ 2-3 CFM per SQFTCovers 1053 SQFT to 1580 SQFT
Minimum Attic Clearance34”
# of Speeds2
Duct Diameter16”
Duct Length6 feet
Motor Head Diameter16 1/2”
Motor Head Length13 1/2”
DampersBarometric Pressurized R5 Dampers
ControlsIncluded: 8 Hr Electronic Timer & HI-LOW-OFF switch
Optional: IT-36002 QuietCool RF Wireless Control Kit
Warranty15 Years
FramingNone Required
Joist CuttingNone Required; fits 16” or 24” on center
Minimum Suggested Attic Venting4.22 SQ FT net free area
Ceiling Rough Opening14 1/4” x 22 1/4”
Removable Grille Outside Dimension16” x 24”
Shipping Weight55 lbs.
Box Dimensions27” x 20” x 38”
In The Box-QC STL PRO-3.3X Motorhead
-Removable Grille
-Cut-out Template
-Window Locks
-Damper Box
-6 Foot Duct
-Accessory Bag

Electronically Commutated AC/DC Brushless Motor

All QuietCool Stealth Pro Line fans include our ultra-high efficiency electronically commutated AC/DC brushless motors. Known as “ECM” motors, these motors offer ultra-high efficiency with very high CFM/Watt ratios. All Stealth Pro fans operate on low wattage and low amperage. These motors are so efficient that they can help homeowners slash their A/C related electricity costs by up to 50-90%.