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Ventilation

Ventilation

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  • 18 in 21"H-W 5 1/4"L SS Backdraft Dampr, 18-1/2 in x 18-1/2 in, Stainless Steel
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    18 in 21"H-W 5 1-4"L SS Backdraft Dampr, 18-1-2 in x 18-1-2 in, Stainless Steel 4FZJ6

    Dayton

    MSRP: $370.45
    $342.23
    21 In.H-W 5 1/4 In.L SS Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Stainless Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 21 in, Rough Opening Diameter 18 1/2 in,...
    MSRP: $370.45
    $342.23
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    MSRP: $370.45
    $342.23
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  • 18 in 21"H-W 5.75"L Alu Wall Backdraft Dampr, 18-1/2 in x 18-1/2 in, Aluminum
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    18 in 21"H-W 5.75"L Alu Wall Backdraft Dampr, 18-1-2 in x 18-1-2 in, Aluminum 1C744

    Dayton

    MSRP: $96.94
    $89.55
    21 In.H-W 5.75 In.L Alu Wall Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 21 in, Rough Opening Diameter 18 1/2...
    MSRP: $96.94
    $89.55
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    MSRP: $96.94
    $89.55
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  • 18 in 21"H-W 5.75"L Aluminum Backdraft Damper, 18-1/2 in x 18-1/2 in, Aluminum 18 in 21"H-W 5.75"L Aluminum Backdraft Damper, 18-1-2 in x 18-1-2 in, Aluminum 4C558
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    18 in 21"H-W 5.75"L Aluminum Backdraft Damper, 18-1-2 in x 18-1-2 in, Aluminum 4C558

    Dayton

    MSRP: $106.73
    $98.60
    21 In.H-W 5.75 In.L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 21 in, Rough Opening Diameter 18 1/2 in,...
    MSRP: $106.73
    $98.60
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    MSRP: $106.73
    $98.60
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  • 18 in 21"H-W 6.5"L Extrd Alu Backdraft Dampr, 18-1/2 in x 18-1/2 in, Aluminum
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    18 in 21"H-W 6.5"L Extrd Alu Backdraft Dampr, 18-1-2 in x 18-1-2 in, Aluminum 4FZH5

    Dayton

    MSRP: $163.24
    $150.81
    21 In.H-W 6.5 In.L Extrd Alu Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 3250 fpm, Overall Height 21 in, Rough Opening Diameter 18 1/2 in,...
    MSRP: $163.24
    $150.81
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    MSRP: $163.24
    $150.81
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  • 20 in 23"H-W 5 1/4"L SS Backdraft Dampr, 20-1/2 in x 20-1/2 in, Stainless Steel
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    20 in 23"H-W 5 1-4"L SS Backdraft Dampr, 20-1-2 in x 20-1-2 in, Stainless Steel 4FZJ7

    Dayton

    MSRP: $398.08
    $367.75
    23 In.H-W 5 1/4 In.L SS Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Stainless Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 23 in, Rough Opening Diameter 20 1/2 in,...
    MSRP: $398.08
    $367.75
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    MSRP: $398.08
    $367.75
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  • 20 in 23"H-W 5.75"L Alu Wall Backdraft Dampr, 20-1/2 in x 20-1/2 in, Aluminum
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    20 in 23"H-W 5.75"L Alu Wall Backdraft Dampr, 20-1-2 in x 20-1-2 in, Aluminum 1C745

    Dayton

    MSRP: $103.72
    $95.81
    23 In.H-W 5.75 In.L Alu Wall Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 23 in, Rough Opening Diameter 20 1/2...
    MSRP: $103.72
    $95.81
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    MSRP: $103.72
    $95.81
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  • 20 in 23"H-W 5.75"L Aluminum Backdraft Damper, 20-1/2 in x 20-1/2 in, Aluminum 20 in 23"H-W 5.75"L Aluminum Backdraft Damper, 20-1-2 in x 20-1-2 in, Aluminum 4C559
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    20 in 23"H-W 5.75"L Aluminum Backdraft Damper, 20-1-2 in x 20-1-2 in, Aluminum 4C559

    Dayton

    MSRP: $113.64
    $104.98
    23 In.H-W 5.75 In.L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 23 in, Rough Opening Diameter 20 1/2 in,...
    MSRP: $113.64
    $104.98
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    MSRP: $113.64
    $104.98
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  • 20 in 23"H-W 6"L Aluminum Wall Backdraft Dampr, 20-1/2 in x 20-1/2 in, Aluminum 20 in 23"H-W 6"L Aluminum Wall Backdraft Dampr, 20-1-2 in x 20-1-2 in, Aluminum 2C522
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    20 in 23"H-W 6"L Aluminum Wall Backdraft Dampr, 20-1-2 in x 20-1-2 in, Aluminum 2C522

    Dayton

    MSRP: $78.85
    $72.84
    23 In.H-W 6 In.L Aluminum Wall Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 fpm, Overall Height 23 in, Rough Opening Diameter 20...
    MSRP: $78.85
    $72.84
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    MSRP: $78.85
    $72.84
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  • 20 in 23"H-W 6.5"L Extrd Alu Backdraft Dampr, 20-1/2 in x 20-1/2 in, Aluminum
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    20 in 23"H-W 6.5"L Extrd Alu Backdraft Dampr, 20-1-2 in x 20-1-2 in, Aluminum 4FZH6

    Dayton

    MSRP: $177.06
    $163.57
    23 In.H-W 6.5 In.L Extrd Alu Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 3250 fpm, Overall Height 23 in, Rough Opening Diameter 20 1/2 in,...
    MSRP: $177.06
    $163.57
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    MSRP: $177.06
    $163.57
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  • 20 in 25"H-W 5.75"L Alu Wall Backdraft Dampr, 22-1/2 in x 22-1/2 in, Aluminum
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    20 in 25"H-W 5.75"L Alu Wall Backdraft Dampr, 22-1-2 in x 22-1-2 in, Aluminum 53DR11

    Dayton

    MSRP: $114.89
    $106.14
    25 In.H-W 5.75 In.L Alu Wall Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 25 in, Rough Opening Diameter 22 1/2...
    MSRP: $114.89
    $106.14
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    MSRP: $114.89
    $106.14
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  • 20 in 25"H-W 5.75"L Aluminum Wall Fan Shutter, 22-1/2 in x 22-1/2 in, Aluminum
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    20 in 25"H-W 5.75"L Aluminum Wall Fan Shutter, 22-1-2 in x 22-1-2 in, Aluminum 53DR17

    Dayton

    MSRP: $128.08
    $118.32
    25 In.H-W 5.75 In.L Aluminum Wall Fan Shutter, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 25 in, Rough Opening Diameter 22 1/2 in,...
    MSRP: $128.08
    $118.32
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    MSRP: $128.08
    $118.32
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