30" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES tool bag + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – Stick-on collar is 16" and it is compatible with duct 16"

actual front end outer dimensions are approximately 38 5/8" width X 16 5/8" height -

+ Product Details Size – 30"w X 10"h is the size for the duct opening measurement only

this register is available in 2-way

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 28" or 28" x 6" duct opening (measured at the opening)

30" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER EASY AIR FLOW LINEAR BAR GRILLES tool bag + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – Stick on collar is 16" and it is compatible with duct 16" actual front end outer dimensions are approximately 38 5 8" width X 16 5 8" height