UNI Filter BF-5 Universal Red Foam Wrap Sheet For Air Filters 12" x 16" x 3/8" Thick 40 PPI Coarse - Kartek Off-Road
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10ppi-60ppi Polyurethane Open Cell Sponge Filter Foam - China Filter Foam, Foam Filter | Made-in-China.com
48x48x1/4 Sure-Fit 1/4-Inch Black Poly Foam | Air Filters, Inc.
54mm Foam Air Filter Pod Cleaner GY6 – Hotstreet Scooters
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Amazon.com: RV AC Filter Replacement Compatible with Colemann Winnebagoo Foam Air Purifier, 15×15×1/4 inch RV AC Foam Filter, 4 Pack RV A/C Air Conditioner Filters : Automotive
Air Filter Foam Sheet, Green (65 PPI Fine), 12 x 16 x 5/8 - Pegasus Auto Racing Supplies