26" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 28 5/8" X 38 5/8"] Return Grille Installation – Installs directly on Product Description Enhance your CRFG68 Victorian Floor Registers

Installation – Installs directly on round & oval spiral duct - no frames

A: Black Grilles Always Look Sharp And Never Show DIrt & Dust Marks

+ Product Details Size – 22"w X 20"h is the size for the duct opening measurement only

Actual Filter Size – 11 3/4"w x 11 3/4" x 1"

3/4" - 2981 PSI

26" X 36" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 28 5 8" X 38 5 8"] Return Grille Installation – Installs directly on Product Description Enhance your CRFG68 Victorian Floor Registers Installation – Installs directly on round & oval spiral duct no frames A: Black Grilles Always Look Sharp And Never Show DIrt & Dust Marks