Filterbuy Building Supplies

Shop Filterbuy Building Supplies listings for pleated HVAC, AC, and furnace replacement air filters in several nominal sizes, thicknesses, and pack formats. Compare dimensions and MERV details before checking a listing.

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Filterbuy 14x25x4 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 13.88 x 24.88 x 3.63 Inches)

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Filterbuy 20x20x4 Air Filter MERV 11 Allergen Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.38 x 19.38 x 3.63 Inches)

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Filterbuy 16x20x4 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.38 x 19.38 x 3.63 Inches)

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