15x20x1 MERV 13 Pleated Air Filter 6PK - 14.5x19.5x.75 - Actual Size Humidifier Accessories Known as item number 129793

Known as item number 129793

Capacity: 5300 Grains

20x25x4 MERV 11 filters are pleated

The cartridge will not remove fluoride from water

Secondary Application: Welding

15x20x1 MERV 13 Pleated Air Filter 6PK - 14.5x19.5x.75 - Actual Size Humidifier Accessories Known as item number 12979315x20x1 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