Allergen Defense Red Micro Pleated Furnace Filter, Single Pack, 18x20x1-In. Canning Lid 1/2" flare x 3/8" female

1/2" flare x 3/8" female pipe thread

use to reduce or increase pipe sizes

LONG LASTING

machine washable genuine bullwhip leather won't dry out or shrink when wet

Allergen Defense Red Micro Pleated Furnace Filter, Single Pack, 18x20x1-In. Canning Lid 1/2" flare x 3/8" female18" 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.