21" x 23 1/4" x 1" MERV 6 - Premium Fiberglass Air Filter - 6 Pack MERV 6 - Fiberglass Air Filter:21" x 23 1/4" x 1" MERV 6 - Fiberglass Air Filter Actual Dimensions: 7 3/4" x

Actual Dimensions: 7 3/4" x 7 3/4" x 3/4"

17" x 29" x 1" MERV 13 - Pleated Air Filter - 6 Pack

Actual Dimensions: 15 1/2" x 19" x 3/4"

19 3/4" x 21 1/2" x 1" MERV 6 - Fiberglass Air Filter - 6 Pack

21" x 23 1/4" x 1" MERV 6 - Premium Fiberglass Air Filter - 6 Pack MERV 6 - Fiberglass Air Filter:21" x 23 1/4" x 1" MERV 6 - Fiberglass Air Filter Actual Dimensions: 7 3/4" x21" x 23 1 4" x 1" MERV 6 Fiberglass Air Filter 6 Pack Actual Dimensions: 21" x 23 1 4" 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