14" X 14" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 16 5/8" X 16 5/8"] fixed bar accordion-header h3 { margin: 0 Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

accordion-header h3 { margin: 0

+ Product Details Size - 28"w X 12"h is the size for the duct opening measurement only

+ Product Details Size – 25"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 16"w X 12"h is the size for the duct opening measurement only

The total outer size of this grille is the listed size plus plus 2 and 5/8"

14" X 14" Steel Return Air Filter Grille for 1" Filter Fixed Hinged [Outer Dimensions: 16 5 8" X 16 5 8"] fixed bar accordion header h3 { margin: 0 Compatible With Duct 7in Applications This sheet metal DDAG A 1212 accordion header h3 { margin: 0 + Product Details Size 28"w X 12"h is the size for the duct opening measurement only