15x20x1 MERV 13 Pleated Air Filter 6PK - 14.5x19.5x.75 - Actual Size Humidifier Accessories This pen boasts highly stable

This pen boasts highly stable microprocessor-based circuitry

24x24x1 MERV 13 filters are right on the cusp of being classified as “medium efficiency MERV pleated air filters” and “high-efficiency MERV pleated air filters

14x24x1 MERV 13 filters are pleated

Capacity: 5300 Grains

15x20x1 MERV 13 Pleated Air Filter 6PK - 14.5x19.5x.75 - Actual Size Humidifier Accessories This pen boasts highly stable15x20x1 MERV 13 Air Filter Box of 6 Actual Size of Filter: 14 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. 15x20x1 MERV 13 filters are right on the cusp of being classified as medium