AirFlo 12 inch Gravity Backdraft Damper Shutter
National Fan Co.
NFC-SR3112X12-RUSH
$82.15
This item ships FREE
AirFlo 16 inch Gravity Backdraft Damper Shutter
NFC-SR3216X16-RUSH
$88.60
AirFlo 12 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SX3112X12-HD-RUSH
$96.56
AirFlo 16 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3116X16-HD-RUSH
$109.50
AirFlo 20 inch Gravity Backdraft Damper Shutter
NFC-SR3220X20-RUSH
$123.57
AirFlo 20 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3120X20-HD-RUSH
$144.46
AirFlo 24 inch Gravity Backdraft Damper Shutter
NFC-SR3224X24-RUSH
$153.86
AirFlo 27 inch Gravity Backdraft Damper Shutter
NFC-SR3227X27-RUSH
$172.62
AirFlo 24 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3124X24-HD-RUSH
$179.87
AirFlo 27 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3127X27-HD-RUSH
$202.20
AirFlo 30 inch Gravity Backdraft Damper Shutter
NFC-SR3230X30-RUSH
$218.69
AirFlo 30 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3130X30-HD-RUSH
$255.76
AirFlo 40 inch Gravity Backdraft Damper Shutter
NFC-SR3240X40
$307.52
AirFlo 36 inch Gravity Backdraft Damper Shutter
NFC-SR3236X36-RUSH
$311.56
AirFlo 42 inch Gravity Backdraft Damper Shutter
NFC-SR3242X42
$331.19
AirFlo 40 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3240X40-HD
$358.34
AirFlo 36 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3236X36-HD-RUSH
$364.66
AirFlo 42 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3142X42-HD
$406.01
AirFlo 48 inch Gravity Backdraft Damper Shutter
NFC-SR3248X48
$406.09
AirFlo 51 inch Gravity Backdraft Damper Shutter
NFC-SR3251X51
$448.70
AirFlo 54 inch Gravity Backdraft Damper Shutter
NFC-SR3254X54
$459.83
AirFlo 48 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3148X48-HD
$502.04
AirFlo 57 inch Gravity Backdraft Damper Shutter
NFC-SR3257X57
$511.25
AirFlo 60 inch Gravity Backdraft Damper Shutter
NFC-SR3260X60
$524.00
AirFlo 51 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3251X51-HD
$566.69
AirFlo 54 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3254X54-HD
$587.77
AirFlo 66 inch Gravity Backdraft Damper Shutter
NFC-SR3266X66
$598.63
AirFlo 57 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3257X57-HD
$630.73
AirFlo 60 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3260X60-HD
$663.23
AirFlo 66 inch Heavy Duty Gravity Backdraft Damper Shutter
NFC-SR3266X66-HD
$769.63
Loading... Loading...
![12 inch Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_200x.jpg?v=1571274750)
![Backdraft Damper Shutter 16 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_b8f2ad63-e6d5-4783-b629-0d36effe0a19_200x.jpg?v=1571274751)
![12 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_813e1fb1-09bd-484c-9d55-cc3a90650140_200x.jpg?v=1571274949)
![16 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_13390f2b-ff0f-4f60-824d-7446a77ceb62_200x.jpg?v=1571274949)
![Backdraft Damper Shutter 20 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_4ba74b45-10c2-4669-890e-af682d1a0393_200x.jpg?v=1571274751)
![20 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_5a3a2da1-9bb7-4598-8d1d-10945186b8ea_200x.jpg?v=1571274949)
![Backdraft Damper Shutter 24 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_f91f61e9-c1c3-4fc5-83ee-f1122b1d0db1_200x.jpg?v=1571274751)
![Backdraft Damper Shutter 27 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_aee5c564-0e27-4bd6-9705-17d593a9aff9_200x.jpg?v=1571274751)
![24 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_93aff413-44da-46b3-b171-6c7a0f1fff88_200x.jpg?v=1571274949)
![27 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_e3022ac6-20f7-47a6-9289-392070ac6019_200x.jpg?v=1571274949)
![Backdraft Damper Shutter 30 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_55560ec8-8e2e-4899-99b2-73e5fe0678e4_200x.jpg?v=1571274752)
![30 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_e75f397b-2877-4d5b-9646-80a75e9b8622_200x.jpg?v=1571274949)
![Backdraft Damper Shutter 36 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_5c92d4c9-a7dc-4b4a-aa80-6ce0a2967557_200x.jpg?v=1594044532)
![Backdraft Damper Shutter 36 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_97fb9896-4b0f-48c1-a325-93fc0611cdef_200x.jpg?v=1571274752)
![Backdraft Damper Shutter 42 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_b0aa9511-4472-4bb6-9496-36135f79cf68_200x.jpg?v=1571274752)
![36 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_19dfcae1-18ee-4bab-9f2c-898c07d54764_200x.jpg?v=1594044725)
![36 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_3dbae265-0679-4a1e-b1cc-44bdf92b6c1c_200x.jpg?v=1571274949)
![42 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_b10a4560-e2eb-419d-8f55-50352e9b9111_200x.jpg?v=1571274949)
![Backdraft Damper Gravity Shutter 48 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_b1a031cd-c53a-4af5-87b7-abcfda3fcb0f_200x.jpg?v=1571274753)
![Backdraft Damper Gravity Shutter 51 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_3fd630f8-c006-475a-90e0-e61f3c0686fb_200x.jpg?v=1571274753)
![Backdraft Damper Shutter 54 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_b1a8dd02-c881-4ae4-aa39-3d6654382590_200x.jpg?v=1571274753)
![48 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_ec40f724-ce92-423d-9f7a-4679be635d8f_200x.jpg?v=1571274950)
![57 inch Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_855da19d-98d8-4c56-95e2-a60e511f962f_200x.jpg?v=1571274753)
![Backdraft Damper Shutter 60 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_4fbb5550-4965-4968-b31a-cbb63c86199a_200x.jpg?v=1571274754)
![Heavy Duty Backdraft Damper 51" x 51", [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3200_front_higher_c5e75222-f4c9-4776-8861-3b7d8e0cfcce_200x.jpg?v=1571274950)
![54 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_98632f39-66cf-4d11-9b17-d0dd29bda0fd_200x.jpg?v=1571274950)
![Backdraft Damper Shutter 66 inch, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_983fc5ed-cb6f-4970-b078-8dd0cb1616f7_200x.jpg?v=1571274754)
![57 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_110fa00b-f64d-4f74-b40d-645c9026cf58_200x.jpg?v=1571274950)
![60 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_4c12dc81-0fe2-4544-ac73-064b5c9de90c_200x.jpg?v=1571274950)
![66 inch Heavy Duty Gravity Backdraft Damper, [product-type] - Industrial Fans Direct](http://cdn.shopify.com/s/files/1/0972/5538/products/sales_3100_front_higher2_7d3909b7-6935-48da-b69f-4c7efa0903f4_200x.jpg?v=1571274951)