19 7/8" x 21 1/2" x 1" MERV 6 - Premium Fiberglass Air Filter - 6 Pack MERV 6 - Fiberglass Air Filter:19 7/8" x 21 1/2" x 1" MERV 6 - Fiberglass Air Filter 21 1/2" x 23 1/2"

21 1/2" x 23 1/2" x 1" MERV 6 - Fiberglass Air Filter - 6 Pack

The secret behind the filter's performance is its patented stage loading/peak and valley design

16 3/8" x 21 1/2" x 1" MERV 6 - Fiberglass Air Filter - 6 Pack

20" x 20" x 4" MERV 11 - Pleated Air Filter - 6 Pack

Actual Dimensions: 19 1/8" x 19 3/8" x 3/4"

19 7/8" x 21 1/2" x 1" MERV 6 - Premium Fiberglass Air Filter - 6 Pack MERV 6 - Fiberglass Air Filter:19 7/8" x 21 1/2" x 1" MERV 6 - Fiberglass Air Filter 21 1/2" x 23 1/2"19 7 8" x 21 1 2" x 1" MERV 6 Fiberglass Air Filter 6 Pack Actual Dimensions: 19 7 8" x 21 1 2" 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