Heavy Carbon Steel Filter Frame

Heavy duty filter frames are fabricated out of carbon steel and given a coat of epoxy paint. The downstream side of the frame uses expanded metal to support the filter media against the air stream. An insert of bulk, polyester filter material serves as the air filtration medium.

 
Heavy Carbon Steel Filter Frame

The upstream side of the filter frame uses hardware cloth to minimize impediment to the air flow. It fits over the other half of the frame like a clamshell and is supplied with two clamping pads to allow it to be clamped into the air duct.