21x23x1 Exact MERV 14 AC Furnace Filters 13x21 3/4x1 Actual Size: 13 1/2 x

Actual Size: 13 1/2 x 24 1/2 x 1 3/4 (13

Nordic Pure 10x20x2 MERV 10 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

Actual Size: 15 1/2 x 35 1/2 x 3/4 (15

Actual Size: 15 3/4 x 15 3/4 x 3/4 (15

but they WILL be strong

21x23x1 Exact MERV 14 AC Furnace Filters 13x21 3/4x1 Actual Size: 13 1/2 xActual Size: 21 x 23 x 3 4 (21 x 23 x 0. 75) Airborne dust, pollen, mold spores, pet dander, smog, dust mite debris, smoke, and bacteria are captured and removed. Ideal for customers with health problems or for commercial units which support a rating of MERV 14 and above Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 14 is equivalent to MPR 2800 Made in the USA. Nordic Pure MERV 14 Pleated AC