8 inch Backdraft Damper Humic Acid Because it switches high-amperage mains

Because it switches high-amperage mains power

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

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

and DLC listing qualifies the fixture for municipal lighting rebates in applicable regions

Do not combine in undiluted form

8 inch Backdraft Damper Humic Acid Because it switches high-amperage mainsAtmosphere'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.