18"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 19.875"W X 15.875"H] Brown + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 26" x 28" or 28" x 26" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 34 5/8" width X 30 5/8" height

of up to 300m3/h

actual front end outer dimensions are 9

actual front end outer dimensions are approximately 12 5/8" width X 36 5/8" height

18"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE EASY AIR FLOW LINEAR BAR GRILLES [OUTER DIMENSIONS: 19.875"W X 15.875"H] Brown + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 26" x 28" or 28" x 26" is the size for the duct opening measurement only actual front end outer dimensions are approximately 34 5 8" width X 30 5 8" height