DuraVent DuraTech Support Box Rails: hold the ceiling box level without a helper
The DuraVent DuraTech Support Box Rails is a pair of temporary supports for a square ceiling support box. The rails hang from the box’s outer edges and sit across the joists, the framing above your ceiling. They keep the box level while one person fastens it in place, without someone else holding it up. They are a convenience, not a required chimney part. Once the box is nailed in, the rails are removed. DuraTech is DuraVent’s double wall chimney, an insulated pipe with a 1 inch wall that takes over from the stovepipe at the ceiling or wall and runs up past the roof.
The chimney needs a 2 inch air gap from anything that can burn, including framing, insulation, and siding. With the appropriate shields and straps, it can remain exposed in an attic or run up an outside wall. It can also sit inside a chase, a framed enclosure around the chimney. That enclosure needs ventilation air, and its framing cannot touch the chimney. Need the box these rails hold? See the DuraVent DuraTech Square Ceiling Support Box. The DuraVent DuraTech Support Box Rails ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.








Planning Your Installation








































