12" x 12" 4-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades 14" Diameter while the included installation screws 4 X 12 Is CRFG2028 Width_14in

while the included installation screws make setup quick and hassle-free

+ Product Spec Sheet Floor Register Spec Sheet

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

Produced in accordance with ISO 9001-2008 Quality Management System

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

12" x 12" 4 WAY SUPPLY GRILLE DUCT COVER & DIFFUSER LOW NOISE For Ceiling With Opposing Damper Blades 14" Diameter while the included installation screws 4 X 12 Is CRFG2028 Width_14in while the included installation screws make setup quick and hassle free + Product Spec Sheet Floor Register Spec Sheet