6" Round Air Vent Supply Grille With Sponge Gasket And Mounting Frame - HVAC Vent Duct Register Cover [Outer Dimensions: 8"] 3-Way or 4-Way actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 30 5/8" width X 10 5/8" height

actual front end outer dimensions are approximately 12 5/8" width X 28 5/8" height

you can attain the diameter of the vent

Operating temperature from -40°f to +248°f [-40°c to +120°c]

Actual Filter Size – 21 3/4"w x 29 3/4" x 1"

6" Round Air Vent Supply Grille With Sponge Gasket And Mounting Frame HVAC Vent Duct Register Cover [Outer Dimensions: 8"] 3 Way or 4 Way actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 30 5 8" width X 10 5 8" height actual front end outer dimensions are approximately 12 5 8" width X 28 5 8" height