20" x 20" x 6" 65% No Header Rigid Filter Commercial Rigid Box Filter Galvanized Rigid Box Filter:20" x 20" x 6 65% No Header Rigid Filter 24" x 36" x 1"

24" x 36" x 1" Permanent Washable Air Filter - 1 Pack

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

Actual Dimensions: 15 1/2" x 24 1/2" x 3/4"

10" x 18" x 2" MERV 8 - Premium Pleated Air Filter - 6 Pack

17" x 22" x 2" MERV 4 - Residential Washable Air Filter - 1 Pack

20" x 20" x 6" 65% No Header Rigid Filter Commercial Rigid Box Filter Galvanized Rigid Box Filter:20" x 20" x 6 65% No Header Rigid Filter 24" x 36" x 1"20" x 20" x 6" 65% No Header Rigid Filter 1 Pack 20" x 20" x 6" 65% No Header Rigid Filter The Filtration Group Rigid Air Filter is a steel cased air filter engineered to provide medium and high efficiency filtration combined with a prolonged life cycle. Its box filter construction eliminates the need for retainer and special external wire media supports. The perimeter frame is constructed of high strength, corrosion resistant galvanized steel.