6" x 6" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover 12" Round Duct Pipe actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

actual front end outer dimensions are approximately 24 5/8" width X 18 5/8" height

+ Product Details Size - 28"w X 34"h is the size for the duct opening measurement only

Actual Filter Size – 27 3/4"w x 25 3/4" x 1"

actual front end outer dimensions are approximately 36 5/8" width X 22 5/8" height

line-height: 22px

6" x 6" 1 Way Extruded Aluminum Ceiling Diffuser Square HVAC Vent Cover 12" Round Duct Pipe actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG A 1212 actual front end outer dimensions are approximately 24 5 8" width X 18 5 8" height + Product Details Size 28"w X 34"h is the size for the duct opening measurement only