18" x 22" or 22" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w32h32 + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 10" x 12" or 12" x 10" is the size for the duct opening measurement only

Airflow – Easy unrestricted airflow for your HVAC system

Actual Filter Size – 17 3/4"w x 27 3/4" x 1"

+ Product Details Size – 40"w X 20"h is the size for the duct opening measurement only

Pressure rating: 2300 to 6500 psi

18" x 22" or 22" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w32h32 + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 10" x 12" or 12" x 10" is the size for the duct opening measurement only Airflow – Easy unrestricted airflow for your HVAC system