





20 in Backdraft Damper / Wall Shutter, 20-1/2 in x 20-1/2 in
Web Price
$76.11
/ each
Product Details
Not Applicable
Horizontal
Aluminum Blade w/ Felt Seal
Aluminum
26 ga
Parallel Blades
Felt
Flat Blade
Nylon; Stainless Steel
Gravity
2,000 fpm
Not Applicable
No
United States
Backdraft
Mill Finish
Static
20 in
20 in
Rear Flange
1 1/2 in
Not Applicable
Not Applicable
Not Applicable
Vertical Mounted Exhaust Fans
2 1/4 in
20
Galvanized Steel
20 ga
20 in
20 in
2.3 sq ft
Not Applicable
Felted Louvers for Quiet Operation
2000 fpm
2000 fpm
180 Degrees F
1 in wc
1/4 in
Prepunched
Vertical
1
6 1/4 in
Gravity
23 in
23 in
6 in
23 in
1
Not Applicable
20 1/2 in
20 1/2 in x 20.5 in
20 1/2 in
Square
20.5 in
Not Applicable
502
G-90 Galvanized Steel Frame and Tie Rods
2.289 sq ft
Backdraft Damper / Wall Shutter
Wall
Vertical
20-1/2 in x 20-1/2 in
23 in x 23 in
23 x 23
Single Acting
Normally Closed
Galvanized Steel Frame and Tie Rods
Viewed together

$22.36 / each
Web price

$26.24 / each
Web price

$27.11 / each
Web price

$41.49 / each
Web price

$40.86 / each
Web price