18" X 6" 2-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White Compatible With Duct 10in R Value Rating of Insulation

R Value Rating of Insulation - R3

but you will appreciate the benefits over the period of time

Actual Filter Size – 33 3/4"w x 33 3/4" x 1"

Exceptional Craftsmanship: Hand-inspected for quality

+ Product Details Size – 26"w X 24"h is the size for the duct opening measurement only

18" X 6" 2-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White Compatible With Duct 10in R Value Rating of Insulation+ Product Details Outer dimensions: 19. 75"W x 7. 75"H fits a 18" X 6" 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