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Quiet Cool Stealth Pro Whole House Fans Specifications.


Quiet Cool Stealth Pro Whole House Fans

QC STL PRO-1.5 Specifications Motor Voltage 120 VAC, 60 Hz Energy Use 55 Watts Air Flow 1545 CFM CFM/Watt (higher is better) 28.09 Square Foot Coverage @ 2 CFM per SQ FT Covers up to 750 SQ FT # of Speeds 1 Duct Diameter 14" Duct Length 6 feet Motor Head Diameter 14 1/2" Motor Head Length 13 1/2" Sound Level in Room (measured 1m from grille) 43 db Dampers Barometric Pressurized R5 Dampers Controls Included 8 Hour Electronic Timer Warranty 15 Years

Joist Cutting None required; fits 16” or 24” on center Minimum Suggested Attic Venting 2 SQ FT net free area Ceiling Rough Opening 14 1/4" X 14 1/4" Removable Grille Outside Dimension 16" x 16" Shipping Weight 36 lbs. Box Dimensions 38" x 20" x 20" In the Box

- QC STL PRO-1.5 Motorhead - 8 Hour Timer - Damper Box - Removable Grille - 6 foot duct - Cut-out template - Accessory bag

QC STL PRO-2.5 Specifications Motor Voltage 120 VAC, 60 Hz Energy Use Hi: 120 Watts Low: 64 Watts Air Flow Hi: 2560 CFM Low: 1984 CFM CFM/Watt (higher is better) Hi: 21.33 Low: 31.00 Square Foot Coverage @ 2 CFM per SQ FT Covers up to 1250 SQ FT # of Speeds 2 Duct Diameter 16" Duct Length 6 feet Motor Head Diameter 16 1/2" Motor Head Length 13 1/2" Sound Level in Room (measured 1m from grille) Hi: 45 dB Low: 42 dB Dampers Barometric Pressurized R5 Dampers Controls Included 8 Hour Electronic Timer and HI-LOW-OFF

Switch Warranty 15 Years Framing None required Joist Cutting None required; fits 16” or 24” on center Minimum Suggested Attic Venting 3.3 SQ FT net free area Ceiling Rough Opening 14 1/4" X 18 1/4" Removable Grille Outside Dimension 16" x 20" Shipping Weight 43 lbs.

QC STL PRO-3.3 Specifications Motor Voltage 120 VAC, 60 Hz Energy Use Hi: 246 Watts Low: 65 Watts Air Flow Hi: 3310 CFM Low: 2060 CFM CFM/Watt (higher is better) Hi: 13.46 Low: 31.69 Square Foot Coverage @ 2 CFM per SQ FT Covers up to 1650 SQ FT # of Speeds 2 Duct Diameter 16" Duct Length 6 feet Motor Head Diameter 16 1/2" Motor Head Length 13 1/2" Sound Level in Room (measured 1m from grille) Hi: 48 dB Low: 42 dB Dampers Barometric Pressurized R5 Dampers Controls Included 8 Hour Electronic Timer and HI-LOW-OFF

Switch Warranty 15 Years Framing None required Joist Cutting None required; fits 16” or 24” on center Minimum Suggested Attic Venting 4.4 SQ FT net free area Ceiling Rough Opening 14 1/4" X 22 1/4" Removable Grille Outside Dimension 16" x 24" Shipping Weight 47 lbs.

QC STL PRO-4.8 Specifications Motor Voltage 120 VAC, 60 Hz Energy Use Hi: 496 Watts Med: 179 Watts Low: 59 Watts Air Flow Hi: 4557 CFM Med: 3092 CFM Low: 2058 CFM CFM/Watt (higher is better) Hi: 9.19 Med: 17.27 Low: 34.88 Square Foot Coverage @ 2 CFM per SQ FT Covers up to 2250 SQ FT # of Speeds 3 Duct Diameter 18" Duct Length 9 feet Motor Head Diameter 18 1/2" Motor Head Length 13 1/2" Sound Level in Room (measured 1m from grille) Hi: 51 dB Med: 43 dB Low: 41 dB Dampers Barometric Pressurized R5 Dampers Controls Included 8 Hour Electronic Timer and Double 3-Way

Switch Warranty 15 Years Framing None required Joist Cutting None required; fits 16” or 24” on center Minimum Suggested Attic Venting 6.1 SQ FT net free area Ceiling Rough Opening 14 1/4" X 30 1/4" Removable Grille Outside Dimension 16" x 32" Shipping Weight 64 lbs.

QC STL PRO-5.5 Specifications Motor Voltage 120 VAC, 60 Hz Energy Use Hi: 724 Watts Med: 244 Watts Low: 82 Watts Air Flow Hi: 5688 CFM Med: 4049 CFM Low: 2719 CFM Square Foot Coverage @ 2 CFM per SQ FT Covers up to 2800 SQ FT # of Speeds 3 Duct Diameter 20" Duct Length 9 feet Motor Head Diameter 20 1/2" Motor Head Length 13 1/2" Sound Level in Room (measured 1m from grille) Hi: 50 dB Med: 43 dB Low: 41 dB Dampers Barometric Pressurized R5 Dampers Controls Included 8 Hour Electronic Timer and Double 3-Way

Switch Warranty 15 Years Framing None required Joist Cutting None required; fits 16” or 24” on center Minimum Suggested Attic Venting 7.6 SQ FT net free area Ceiling Rough Opening 14 1/4" X 30 1/4" Removable Grille Outside Dimension 16" x 32" Shipping Weight 76 lbs.

QC STL PRO-6.5 Specifications Motor Voltage 120 VAC, 60 Hz Energy Use Hi: 506 Watts Med/Hi: 315 Watts Med/Low: 246 Watts Low: 67 Watts Air Flow Hi: 6307 CFM Med/Hi: 4874 CFM Med/Low: 3476 CFM Low: 2286 CFM

CFM/Watt (higher is better) Hi: 12.46 Med/Hi: 15.47 Med/Low: 14.13 Low: 34.12 Square Foot Coverage @ 2 CFM per SQ FT Covers up to 3150 SQ FT # of Speeds 4 Duct Diameter 16" Duct Length 6 feet Motor Head Diameter 16 1/2" Motor Head Length 13 1/2" Sound Level in Room (measured 1m from grille) Hi: 50 dB Med/Hi: 48 dB Med/Low: 45 dB Low: 43 dB Dampers Barometric Pressurized R5 Dampers Controls Included 8 Hour Electronic Timer and Double 3-Way Switch Warranty 15 Years Framing None required Joist Cutting None required; fits 16” or 24” on center Minimum Suggested Attic Venting 8.4 SQ FT net free area Ceiling Rough Opening 14 1/4" X 36 1/4" Removable Grille Outside Dimension 16" x 38" Shipping Weight 87 lbs. Box Dimensions 42" x 20" x 38"


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