Square Ceiling Support Box 8 '" x 11"

The DuraTech 6" Diameter 11" Square Ceiling Support Box offers a durable solution for supporting chimney pipes in both flat and cathedral ceilings. Featuring a built-in twistlock, it ensures a secure connection between the support box and the chimney. Perfect for short attic spaces, this component adds both safety and stability to your DuraVent chimney system.