24" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Red Oak or commercial environments 4 X 12 Is CRFG2028 Width_14in

or commercial environments

High Quality – Polished pre-finish gloss varnish ready to install - can also be sanded and re-finished according to application needs

+ Product Details Size – 12" X 4" is the size for the duct opening (floor/vent hole) measurement only

actual front end outer dimensions are 9

this model allows for mounting without removing the thermostat

24" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Red Oak or commercial environments 4 X 12 Is CRFG2028 Width_14in or commercial environments High Quality – Polished pre finish gloss varnish ready to install can also be sanded and re finished according to application needs