12" x 12" 4-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades 14" Diameter + Product Details Outer dimensions: Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Outer dimensions: – fits a duct opening

+ Product Details Size – 20" x 22" or 22" x 20" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 16 5/8" width X 30 5/8" height

+ Product Details Size - 6"w X 6"h X 2"d (for duct opening measurement only)

+ Product Spec Sheet Floor Register Spec Sheet

12" x 12" 4 WAY SUPPLY GRILLE DUCT COVER & DIFFUSER LOW NOISE For Ceiling With Opposing Damper Blades 14" Diameter + Product Details Outer dimensions: Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Outer dimensions: – fits a duct opening + Product Details Size – 20" x 22" or 22" x 20" is the size for the duct opening measurement only