Top Outlet Ceiling Diffuser Box | 12" X 12" X 8" | Galvanized Steel Metal Box Is Compatible With Duct 8" Sheet Metal / Round Duct + Product Details Size -

+ Product Details Size - 25"w X 24"h is the size for the duct opening measurement only

making it perfect for both residential and commercial installations

Designed for optimal air flow and lasting durability

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 18" or 18" x 10" duct opening (measured at the opening)

The door comes equipped with a user-friendly turn lock

Top Outlet Ceiling Diffuser Box | 12" X 12" X 8" | Galvanized Steel Metal Box Is Compatible With Duct 8" Sheet Metal / Round Duct + Product Details Size -+ Product Details Size & Compatibility The size of the side round ceiling box is 12" X 12" X 8" and it is compatible with duct 8" Premium Quality Made in the USA. Our Galvanized Duct Box is made of high quality 26 Gauge galvanized sheet metal for durability. It features a snap lock design for easy fitting and a secure connection. Applications The C box duct with drywall flange, round connects to vent register diffuser, airflow conditioning ceiling