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 + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 28"w X 16"h is the size for the duct opening measurement only

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

+ Product Details Size – 8" x 34" or 34" x 8" is the size for the duct opening measurement only

+ Product Details Size – 32"w X 18"h is the size for the duct opening measurement only

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

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 + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 28"w X 16"h is the size for the duct opening measurement only Actual Filter Size – 21 3 4"w x 29 3 4" x 1"