22" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 24 5/8" X 18 5/8"] Color_Red Oak Wood High Quality – Polished pre-finish 4 X 12 Is CRFG2028 Width_14in

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

3 * insulation density is 30kgs/cbm = 0

Premium Airflow Efficiency - High-performance cube core eggcrate design allows 95% airflow efficiency

+ Product Details Size – 16"w X 32"h is the size for the duct opening measurement only

For 12" Round Duct Opening - Spiral or Flex

22" X 16" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 24 5 8" X 18 5 8"] Color_Red Oak Wood High Quality – Polished pre finish 4 X 12 Is CRFG2028 Width_14in High Quality – Polished pre finish gloss varnish ready to install can also be sanded and re finished according to application needs 3 * insulation density is 30kgs cbm = 0