20" x 27" x 1" MERV 6 - Premium Fiberglass Air Filter - 6 Pack MERV 6 - Fiberglass Air Filter:20" x 27" x 1" MERV 6 - Fiberglass Air Filter 21 1/4" x 21 1/2"

21 1/4" x 21 1/2" x 1" MERV 11 - Pleated Air Filter - 6 Pack

13 1/2" x 13 1/2" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

12 1/2" x 24 1/2" x 4" MERV 13 - Pleated Air Filter - 6 Pack

12" x 24" x 12" 85% With Header Rigid Filter - 1 Pack

20" x 27" x 1" MERV 6 - Premium Fiberglass Air Filter - 6 Pack MERV 6 - Fiberglass Air Filter:20" x 27" x 1" MERV 6 - Fiberglass Air Filter 21 1/4" x 21 1/2"20" x 27" x 1" MERV 6 Fiberglass Air Filter 6 Pack Actual Dimensions: 20" x 27" 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 changed and