12" X 10" 2-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White Copper Coil + Product Details Size -

+ Product Details Size - 36"w X 26"h is the size for the duct opening measurement only

much more than required 700 PSI for R410

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

actual front end outer dimensions are approximately 12 5/8" width X 38 5/8" height

With a 5" diameter for the duct opening measurement

12" X 10" 2-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White Copper Coil + Product Details Size -+ Product Details Outer dimensions: 13. 75"W x 11. 75"H fits a 12" X 10" duct opening Durable stamped steel construction ensures long lasting performance Designed for sidewall and ceiling installation with included screws Multi shutter damper with easy lever for precise airflow control Smooth powder coated white finish for a sleek look and scratch resistance + Product Description Maximize your homes airflow with this premium Air Supply Grille air