DuraVent DuraPlus 6" Inner Diameter Square Ceiling Support Box
The DuraVent DuraPlus 6" Inner Diameter Square Ceiling Support Box is a durable triple-wall chimney system component designed to provide secure structural support for vertical runs in wood stove chimney installations and other all-fuel venting systems. Engineered with advanced ceramic blanket insulation and an air-space layer, this insulated ceiling support box keeps exterior surfaces cool while maintaining a strong internal draft to improve stove efficiency. The secure insulation eliminates hot spots and enhances overall chimney venting safety, making it an essential part of a reliable residential chimney installation.
Built for continuous operation at flue gas temperatures up to 1000°F, the DuraVent DuraPlus square ceiling support box meets strict UL-listed chimney standards, including one hour at 1400°F and three 2100°F chimney fire tests. This heavy-duty galvanized steel chimney support component delivers long-lasting fire-safe performance and dependable structural stability for all-fuel chimney systems.
Features
-
Versatile Ceiling Installation Compatibility: Designed for flat, vaulted, and cathedral ceilings, the DuraVent DuraPlus square ceiling support box provides flexible installation options for wood stove chimney systems and all-fuel venting applications.
-
Heavy-Duty Chimney Support System: Engineered to support up to 35 feet of DuraPlus chimney pipe, ensuring strong structural stability for long vertical runs in residential chimney venting systems.
-
Built-In Starter Section Design: Includes a built-in starter section for simplified installation, making it an essential component for efficient triple-wall chimney pipe setups.
-
Adapter Compatibility for Flexibility: Designed for use with DVL and DuraBlack adapters, allowing seamless integration with various stove pipe and chimney venting configurations.
-
Professional Black Finish: The square ceiling support box is painted black, delivering a clean, professional appearance that blends with modern fireplace and chimney installations.
-
Trim Kit Included: Comes complete with a trim piece for a finished ceiling installation look, enhancing aesthetics and ensuring a clean chimney system finish.
-
Proper Sizing Guidance: Refer to the ceiling pitch table to determine the correct support box size for accurate and code-compliant chimney installation planning.
Specifications
| Item Number |
Series |
Product Type |
Inside Diameter |
A |
| 6DP-CS11 |
DuraPlus (6"-8") |
Ceiling Support Box |
6" |
11" |
| 6DP-CS24 |
DuraPlus (6"-8") |
Ceiling Support Box |
6" |
24" |
| 6DP-CS36 |
DuraPlus (6"-8") |
Ceiling Support Box |
6" |
36" |
Downloads
California PROP 65: This product can expose you to Lead & Chromium, which is known to the State of California to cause cancer and birth defects, or other reproductive harm. See WARNING
