Microparticle Pleated Furnace Filter, 20x20x1- In. Brand_ProtectPlus The enzymatic cleaner will continue

The enzymatic cleaner will continue working as long as the food source is present

Made from polyether outdoor durable foam

UNIVERSAL DESIGN works for the majority of toilet installations

Nose thread (the threads where the filter spins onto the filter head) is 1" - 12 unf

Our ultra-slim 395nm UV Penlight can reveal undetectable materials not seen through normal lighting

Microparticle Pleated Furnace Filter, 20x20x1- In. Brand_ProtectPlus The enzymatic cleaner will continue20" x 20" x 1", Naturalaire Micro Particle Pleated Furnace Filter, Electrostatically Charged, 100% Synthetic Wire Backed Media, Clay Coated Frame, Merv Rating 10, 90 Day Filter, Effective Against Pollen, Dust Lint, Dust Mites, Pet Dander, Mold, Bacteria, Virus Carriers, Smoke, Smog, Lead Dust.