Allergen Defense Red Micro Pleated Air Furnace Filter, 10x20x1-In. Ladders 2 in a package

2 in a package

this filter housing features a pressure relief button used at cartridge change time

This treatment works hard for 30 days following application

Requires nut driver to be installed

Included are 4 support brackets for mounting

Allergen Defense Red Micro Pleated Air Furnace Filter, 10x20x1-In. Ladders 2 in a package10" x 20" x 1", Red, Micro 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 1000, Filter Lasts For 90 Days, Color Red.