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Quiet Cool Stealth Pro Whole House Fans Specifications.

February 23, 2018

 

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"