14x20x1 MERV 13 Pleated Air Filter 6PK - 13.5x19.5x.75 - Actual Size Water Filters FAST Air Filters Vertical or horizontal operating configuration

Vertical or horizontal operating configuration

Outer Diameter: 4

fiberglass filters

Our 20x20x4 MERV 8 filters are the perfect filters for homes that have older HVAC units

14x20x1 MERV 13 Pleated Air Filter 6PK - 13.5x19.5x.75 - Actual Size Water Filters FAST Air Filters Vertical or horizontal operating configuration14x20x1 MERV 13 Air Filter Box of 6 Actual Size of Filter: 13 1 2 x 19 1 2 x Air filters are ranked in a minimum efficiency rating value (MERV) system. The higher the MERV rating, the better the filter can filter out all airborne particulates. Since we are constantly trying to improve indoor air quality, it only makes sense that we would offer air conditioner filter MERV 13. 14x20x1 MERV 13 filters are right on the cusp of being classified as medium