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16x20x1 Air Filters

16x20x1 filters are common in smaller furnaces, air handlers and apartment return grilles.

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16x20x1 filters are common in smaller furnaces, air handlers and apartment return grilles.

  • Actual size is about 15.5 x 19.5 x 0.75 in.
  • Two filters? Homes with more than one return grille need a filter for each; measure every grille, as sizes often differ.
  • Pleated or fiberglass. Pleated filters have more surface area and capture more than flat fiberglass panels at the same size.

Not sure which rating to buy? See the MERV rating chart and the MERV finder. All sizes: HVAC and furnace air filters.