Washable Aluminum Air Filter - 20 x 20 x 1

Captures large dust particles, useful upstream in your air intake to protect your HEPA or pleated filters downstream. See-through by design- meant for high flow and not for small particles.

Heavy duty Aluminum Frame, with expanded and bonded aluminum filter media, the rear of the filter features a layer of expanded and corrugated Aluminum to support the filter in High-CFM applications.

20 x 30 x 1

Sizes are nominal, and 3/8" smaller than listed.