This 6" x 6" HVAC ceiling register box provides a durable transition between round supply ductwork and a square ceiling register or grille. Fabricated from 26-gauge galvanized steel, it features a 6" round collar for connection to compatible round duct.
The integral drywall/plaster-ground flange supports a secure, finished ceiling installation. This ceiling box is suitable for residential and commercial HVAC supply-air systems requiring a 6" x 6" register opening and a 6" round duct connection.
Sizing Note: The first two dimensions identify the square register-box opening. The final dimension identifies the nominal round collar diameter.