16" X 6" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 18 5/8" X 8 5/8"] w18h18 allowing unrestricted airflow for optimal Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

allowing unrestricted airflow for optimal HVAC performance

actual front end outer dimensions are approximately 20 5/8" width X 27 5/8" height -

+ Product Details Size - 20"w X 2"h is the size for the duct opening measurement only

width: 20px

+ Product Details Size - 34"w X 34"h is the size for the duct opening measurement only

16" X 6" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 18 5 8" X 8 5 8"] w18h18 allowing unrestricted airflow for optimal Compatible With Duct 7in Applications This sheet metal DDAG A 1212 allowing unrestricted airflow for optimal HVAC performance actual front end outer dimensions are approximately 20 5 8" width X 27 5 8" height