8 inch Backdraft Damper Humic Acid Reduced expansion under pressure keeps

Reduced expansion under pressure keeps the spray feel steady at the wand instead of pulsing

Worn or stained lines swap out in minutes when you re-route around pumps

Mounting Strap Length

Effective against mold

the unique "diamond" reflective walls provide greater reflectivity and even lumen redistribution

8 inch Backdraft Damper Humic Acid Reduced expansion under pressure keepsAtmosphere's all new galvanized steel back draft dampers fit directly into the duct simplifying installation. They feature a shaft for each of the 2 flaps so to prevent jamming. Also, the flaps close onto a perimeter gasket ensuring the best air seal and quiet operation.