10" X 4" 2-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White Width_20in Design – Made of strong

Design – Made of strong durable ABS plastic

if your hole is 20" wide by 14" tall

accordion-header { display: flex

+ Product Details Size - 26"w X 18"h is the size for the duct opening measurement only

10" X 4" 2-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White Width_20in Design – Made of strong+ Product Details Outer dimensions: 11. 75"W x 5. 75"H fits a 10" X 4" 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 supply