Side Outlet Ceiling Diffuser Box | 12" X 12" X 4" | Galvanized Steel Metal Box is Compatible with Duct 4" w36h36 + Product Details Size –

+ Product Details Size – 20"w X 50"h is the size for the duct opening measurement only

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

Measure the size of the air duct/drywall opening

This 14" X 14" end cap is constructed with 26-gauge galvanized steel

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Side Outlet Ceiling Diffuser Box | 12" X 12" X 4" | Galvanized Steel Metal Box is Compatible with Duct 4" w36h36 + Product Details Size –+ Product Details Size & Compatibility The size of the side round ceiling box is 12" X 12" X 4" and it is compatible with duct 4". 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 This sheet metal register duct ceiling outlet box is used for a 90 degree connection of round pipe to a