Corinthian Vent Cover Return Air Filter Frame (White) - 32" x 5" opening size (34" x 7" overall) with mounting holes - Vent and Cover
Air Filter Frame - AAF International
Air Filter Pad Stabilizing Frame - Permatron
20" x 20" x 2-1/8" Galvanized Steel Air Filter Holding Frame w/Gasket and Clips
Furnace Filters Frames - Custom sized
Air Filter Frames for Furnaces & AC Systems - Snap filter frames
14x25x1 Nominal Air Filter Pad Holding Frame – Metal Air Filters
Holding Frames – American Metal Filter
Pads - n - Frame Kit (incl. 12 pads) Blue/White Polyester Air Filter 1 – Air Filter Hub LLC
Made in USA 20" x 24" x 12", 95% Efficiency, V-Bank Mini-Pleat Air Filter MERV 14, Microfiberglass, Integrated Plastic Frame, 500 Max FPM, 1,675 CFM, For Any Unit - Walmart.com
Thick Frame Reusable Air Filter – SmartFilters
16x20x1 Washable Aluminum Foil Mesh Air Filter with Galvanized Steel Frame – Metal Air Filters
Silver Frame Filters – Standard Sizes – ACFilter Indoor Home & Commercial Air Quality Products
Galvanized Steel, 8 in Actual Dp, HEPA Air Filter Holding Frame - 20HN74|20HN74 - Grainger