8x14x1 Exact MERV 14 AC Furnace Filters Number Per Box:6 There is a metal mesh

There is a metal mesh support grid bonded to the pleats for extra support

We recommend changing your HVAC furnace filter every 1-3 months

Attracts and captures most odors

Actual Size: 7 3/4 x 19 3/4 x 3/4 (7

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

8x14x1 Exact MERV 14 AC Furnace Filters Number Per Box:6 There is a metal meshActual Size: 8 x 14 x 3 4 (8 x 14 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