28" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w22h22 High quality – High quality CRFG2028 Width_14in 4 X 12 Is

High quality – High quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

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

+ Product Details Size - The listed 10" diameter refers specifically to the size of the duct opening

order a 14x20 grille

Ideal for Walls & Ceilings: Designed for seamless installation in standard 14" X 6" duct openings

28" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w22h22 High quality – High quality CRFG2028 Width_14in 4 X 12 Is High quality – High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges and with a built in back 1 2" mesh they also protect you from annoying rodents like mice