Pleated Furnace Filter, Ultra Allergen Reduction, 3-Month, Purple, 14x25x1-In. Merck 4 holes in this high-bouncing

4 holes in this high-bouncing rubber ball produce a whistle as air passes through to keep your dog interested

Teflon seats

25" shank diameter

1 3/8-Inch Hub

Pleated Furnace Filter, Ultra Allergen Reduction, 3-Month, Purple, 14x25x1-In. Merck 4 holes in this high-bouncing14" x 25" x 1", purple, ultra allergen filtrete filter, 90% effective at capturing large allergens like mold spores & pet dander, 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 1500, filter lasts for 90 days, color purple.