Fits 6x12 Duct Opening Stamped Steel Return Air Grille Vent Cover Grille for Sidewall and Ceiling in White Surface Dimensions: 7.75" W X 13.75" H (6" W x 12" H Duct Opening) Actual outside dimension is 10"

Actual outside dimension is 10"

Simple round flow design for smooth air flow

please take off your old floor register and measure the duct hole

Use the measurement to determine right size to buy

Distance between the centers of two screws is 13"

Fits 6x12 Duct Opening Stamped Steel Return Air Grille Vent Cover Grille for Sidewall and Ceiling in White Surface Dimensions: 7.75" W X 13.75" H (6" W x 12" H Duct Opening) Actual outside dimension is 10"The Listed size 6"x12" is for inside duct opening measurement, actual outside dimension is 7. 75"x13. 75" Stamped Face Steel Construction with 1 2" fin spacing for high air flow applications. Screws are included for easy installation White Powder coating with matte finish Individually packed with cardboard box for ultra protection