19x27x1 Exact MERV 12 AC Furnace Filters All Types Since you can't return custom

Since you can't return custom sized air filters

Replaces Trion Air Bear Cub filters and others that require an actual 3" depth and ideal for normal air filtration

The media used will not promote the growth of bacteria or mold on the air filter and is better at trapping airborne particles than fiberglass filters

Trion Air Bear Replacement filters have a depth of 4 7/8" and ideal for customers with health problems or for commercial units

activated carbon furnace filters absorb odors on a molecular level

19x27x1 Exact MERV 12 AC Furnace Filters All Types Since you can't return customActual Size: 19 x 27 x 3 4 (19 x 27 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores and other contaminants. Ideal for high efficiency air filtration and will help those with moderate allergies and asthma. Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12 is equivalent to MPR 1500 1900 Made in the USA. Nordic Pure MERV 12