Clear Plastic Classic Thermostat Cover- Solid and Ring Bases- 5-1/4"-4-3/8" w26h26 + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – 12"w X 4"h is the size for the duct opening measurement only

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

Quality Packaging – carefully shrink wrapped with cardboard backing to prevent damage in shipment

+ Product Details Size – 10"w X 18"h is the size for the duct opening measurement only

+ Product Details Size - 24"w X 24"h is the size for the duct opening measurement only

Clear Plastic Classic Thermostat Cover Solid and Ring Bases 5 1 4" 4 3 8" w26h26 + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 12"w X 4"h is the size for the duct opening measurement only + Product Details Size 34"w X 34"h is the size for the duct opening measurement only