Allergen Defense Red Micro Pleated Furnace Filter, 12x12x1-In. Dimmers The Bulldog design features the

The Bulldog design features the only automatic and continuously tight ball fit in the industry

Rectangular shaped conduit body with a removable cover

Resistant to harsh chemicals

meets api tc performance requirements

Freestyle 05-07

Allergen Defense Red Micro Pleated Furnace Filter, 12x12x1-In. Dimmers The Bulldog design features the12" x 12" x 1", Red, Micro 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 1000, Filter Lasts For 90 Days, Color Red.