Nominal Size 12 x 12 x 1 . Actual Size 11.75 x 11.75 x 0.75 MERV 8 Rated. Electrostatic pleated media, which performs better than regular fiberglass filters. Traps dust and allergens such as pollen, , and pet dander Pack of 4 Filters. Each filter lasts up to 90 days.
 

12X12X1 (11.75 x 11.75) Enviroflow Air Filter (MERV 8) (4 Pack)

THE HIGHER THE MERV RATING, THE MORE PARTICLES TRAPPED � Merv 8 rated AC/Furnace filter. Tested and rated according to ASHRAE Standard 52.2 CREATE CLEANER INDOOR AIR AT YOUR HOME OR WORK - Captures up to 76% of common airborne contaminants such as dust, lint, dust mite debris, pollen, pet dander, smoke, bacteria, and mold spores. BETTER PERFORMANCE � This Enviroflow air filter is 20 times more efficient than ordinary fiberglass filters EASY INSTALL � Simply remove your old filter, unpack the new one, insert the filter so the arrow on the side of the frame matches air flow direction, and lastly record the date to keep track of when to change