Side Outlet Ceiling Diffuser Box | 12" X 12" X 4" | Galvanized Steel Metal Box is Compatible with Duct 4" w36h36 while the included safety wire

while the included safety wire provides added security to prevent the door from falling off

Measure the size of the air duct/drywall opening

+ Product Details Size – 34"w X 36"h is the size for the duct opening measurement only

Design – Circular air supply valves - designed to be used in low and medium pressure ventilation air conditioning systems

Side Outlet Ceiling Diffuser Box | 12" X 12" X 4" | Galvanized Steel Metal Box is Compatible with Duct 4" w36h36 while the included safety wire+ 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