Pleated Furnace Filter, Ultra Allergen Reduction, 3-Month, Purple, 14x20x1-In. Brand_GrassWorx Installed on the 3/4-inch main

Installed on the 3/4-inch main water line at the point of entry

Seals & Insulates Gaps

Use 7/16" Drill Bit

Virtually 100% water soluble

Slim metal construction for indoor or outdoor use

Pleated Furnace Filter, Ultra Allergen Reduction, 3-Month, Purple, 14x20x1-In. Brand_GrassWorx Installed on the 3/4-inch main14" x 20" x 1", purple, ultra allergen filtrete filter, 3 month filter is 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.