DuraPlus Round Ceiling Support Box

The DuraPlus Support Box offers reliable support for chimney pipes while ensuring a secure connection with its built-in twist-lock design. Capable of supporting up to 35 feet of DuraPlus Chimney, this support box is ideal for a variety of installations. Easily connect DVL or DuraBlack pipes using an adapter. Finished in a sleek black paint, it also comes with a trim collar for a clean, polished look. Available in 6" and 8" diameters, the DuraPlus Support Box delivers strength, stability, and style to your chimney system. Additional DuraPlus Info: DuraPlus is engineered to maintain a cooler exterior while promoting a hotter draft inside, enhancing stove efficiency and ensuring a fire-safe design that safeguards both the chimney and the surrounding structure. This triple-wall chimney features two layers of insulation: a ceramic blanket and an air gap. The ceramic blanket insulation is securely positioned, preventing the hot spots often caused by loose-fill insulation types. In the event of a creosote fire, the compressible insulation allows the chimney liner to expand outward radially. Built to withstand continuous operation at 1000°F flue gas temperatures, DuraPlus meets the rigorous UL standards, including one hour at 1400°F and three ten-minute chimney fire tests at 2100°F.