13 1/2" x 20" x 1" MERV 6 - Premium Fiberglass Air Filter - 6 Pack 21-5l 12" x 36" x 2"

12" x 36" x 2" MERV 13 - Pleated Air Filter - 6 Pack

Actual Dimensions: 19" x 21" x 3/4"

19 7/8" x 21 1/2" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

17 1/2" x 35 1/4" x 1" MERV 11 - Pleated Air Filter - 6 Pack

Unlike disposable filters made with sharp metal

13 1/2" x 20" x 1" MERV 6 - Premium Fiberglass Air Filter - 6 Pack 21-5l 12" x 36" x 2"13 1 2" x 20" x 1" MERV 6 Fiberglass Air Filter 6 Pack Actual Dimensions: 13 1 2" x 20" x 3 4" This filter is constructed using a MERV 6, fiberglass media with a downstream scrim and encased in the same partially recycled cardboard frame as pleated air filters. Unlike disposable filters made with sharp metal, these will not cut your hands and feature a low pressure drop and high level of filtration. Each filter lasts up to 1 month and should be