12" x 24" x 12" 95% No Header Rigid Filter Commercial Rigid Box Filter Galvanized Rigid Box Filter:12" x 24" x 12 95% No Header Rigid Filter 21 1/2" x 23 1/2"

21 1/2" x 23 1/2" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

12" x 18" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

24" x 25" x 1" Permanent Washable Air Filter - 1 Pack

This filter is comparable to the 3M Filtrete Dust & Pollen: Filtrete 600

Actual Dimensions: 16" x 18" x 3/4

12" x 24" x 12" 95% No Header Rigid Filter Commercial Rigid Box Filter Galvanized Rigid Box Filter:12" x 24" x 12 95% No Header Rigid Filter 21 1/2" x 23 1/2"12" x 24" x 12" 95% No Header Rigid Filter 1 Pack 12" x 24" x 12" 95% 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.