20" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Red Oak Wood + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 12"w X 22"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 10 5/8" height -

allowing unrestricted airflow for optimal HVAC performance

+ Product Details Size – 32"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 20 5/8" width X 10 5/8" height

20" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Red Oak Wood + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 12"w X 22"h is the size for the duct opening measurement only actual front end outer dimensions are approximately 32 5 8" width X 10 5 8" height