20x21 1/2x1 Exact MERV 14 AC Furnace Filters Number Per Box:6 Each time air passes through

Each time air passes through a Nordic Pure Pleated ASG replacement furnace filter

Actual Size: 17 1/2 x 21 x 3/4 (17

You might check the actual sizes of our other air filters to make sure a standard size air filter wouldn't work for you

We recommend the window air conditioning filter 15 x 24 x 1/4 cut to size UL Class 2 rated be replaced approximately every 30 to 60 days for fresh clean air for your family and home

Replaces Honeywell 16x20x4 and filters with an MPR rating with an actual depth of 4 3/8 and ideal for normal air filtration

20x21 1/2x1 Exact MERV 14 AC Furnace Filters Number Per Box:6 Each time air passes throughActual Size: 20 x 21 1 2 x 3 4 (20 x 21. 5 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