18x24x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters Number Per Box:12 polyester material with an added

polyester material with an added layer of smooth poly-blend electrostatic filter media

Nordic Pure 8x20x1 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

The effective life of your air filter depends on both the inside and outside conditions of the environment in which the filter is being used

Actual Size: 13 1/4 x 13 1/4 x 3/4 (13

18x24x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters Number Per Box:12 polyester material with an addedActual Size: 17 1 2 x 23 1 2 x 1 2 (17. 5 x 23. 5 x 0. 5) Captures large airborne particles like household dust, pet dander, bacteria and pollen. Ideal for customers with apartments, window units, campers, and RVs. Antimicrobial high capacity, polyester material with an added layer of smooth poly blend electrostatic filter media For filter installation the air enters thru the fuzzy, high loft side and exits out the thinner, smooth side. Made in the