22" x 26" Pleated MERV 8 Filter for HVAC Return Filter Grille Material_Anodized Aluminum and with a built-in back

and with a built-in back 1/2" mesh they also protect you from annoying rodents like mice

powder-coated steel

All steel wire is applied between PET surfaces to prevent corrosion (oxidization)

you’ll notice the immediate improvement in appearance of the mini-split

actual front end outer dimensions are approximately 18 5/8" width X 26 5/8" height -

22" x 26" Pleated MERV 8 Filter for HVAC Return Filter Grille Material_Anodized Aluminum and with a built-in back22" x 26" Pleated MERV 8 Filter for HVAC Return Filter Grille Actual Dimensions: 21. 75" X 25. 75" A Uniquie Combination of Cotton & Synthetic Fibers Gives You The Most Filtration And The Least Air Resistance Equals Great Air & Easy Airflow For Your System The "W" Shaped Pleats Give You More Filter Surface Thereby Capturing More Dust All Our Filter Are Tested Per ASHRAE 52. 2 Standards MERV 8 And An Average Arrestance Of 90 94% Extra Strong Frame Our