8" x 8" 4-Way Curved Blade Supply Grille, With Damper & Lever, Fixed Blades 18in diameter + Product Details Size -

+ Product Details Size - 36"w X 18"h is the size for the duct opening measurement only

Actual Filter Size – 24 3/4"w x 15 3/4" x 1"

actual front end outer dimensions are approximately 18 5/8" width X 16 5/8" height

+ Product Description Introducing the 6" Butterfly Damper – Your Solution for Controlled Airflow

Design – rigid gauge built for durability and long life in mind

8" x 8" 4-Way Curved Blade Supply Grille, With Damper & Lever, Fixed Blades 18in diameter + Product Details Size -+ Product Details Size 8"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" width X 9. 75" height. High Quality high quality steel with counter sunk screw holes (screws included) and no sharp edges, equipped with a lever for airflow dampening. Installation Location sidewall and ceiling. Design rigid gauge built for durability and long life in mind, but still light and handy. Powder