Allergen Defense Red Micro Pleated Furnace Filter, Single Pack, 18x20x1-In. Canning Lid use to reduce or increase

use to reduce or increase pipe sizes

Cut Lengths

contains 3 saw tooth picture hangers

Superior engine cleanliness for a cleaner engine throughout oil drain interval*

3/8" nominal compression x 3/8" outer diameter compression

Allergen Defense Red Micro Pleated Furnace Filter, Single Pack, 18x20x1-In. Canning Lid use to reduce or increase18" x 20" x 1", red, micro filtrete filter, 3 month filter is 90% effective at capturing large allergens like mold spores & pet dander, electrostatically charged, captures microscopic allergens like dust, smoke & smog, captures bacteria & particles that can carry viruses, meets the guidelines of the American lung association health house program, mpr rating 1000, lasts up to 3 months.