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  8" Duratech Flat Ceiling Support Box (9644)
8" Duratech Flat Ceiling Support Box (9644)
Pro/installer only product, see Warranty.
List Price: $110.14
Our Price: $99.13
You save $11.01!

Availability:: Usually Ships in 24 to 72 Hours
Product Code: 9644


The DuraTech Flat Ceiling Support Box supports chimney pipe and provides a positive connection between the support box and the chimney pipe with a built-in twist lock feature. This ceiling support is designed for flat ceiling applications only. Designed for appliances that are tested and listed for use with a 2100 F HT chimney system, such as woodstoves, fireplaces, furnaces, boilers, stoves, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas. This Flat Ceiling Support Box will support up to 60' of DuraTech Chimney. The support box comes unpainted, but can be painted with high temperature paint. A 2" wide trim collar is included

DuraTech is a double-wall, all-fuel chimney system for use with wood stoves, fireplaces, furnaces, boilers, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas, and zero-clearance fireplaces that are factory-built.


  • Diameter: 8"
  • Construction Material: Galvalume Steel
  • Clearance: 2" clearance to combustibles
  • Listings: c-UL-us Listed to UL 103 and ULC S604 (MH7399)
  • Factory installed twist-lock fittings
  • Flat ceiling installation only
  • Item Weight: 7.00 LB
  • Model: 9644

  • With a Thermal Tech blanket insulation encased between duel walls, DuraTech offers superior safety and performance. It keeps the outer wall cool while ensuring high flue gas temperatures for optimum draft performance. The inner wall is 25% thicker than competitive chimneys, for an extra margin of safety. Designed for normal, continuous operation at 1000F flue gas temperatures, DuraTech is subjected to rigorous and stringent HT requirements of the UL standard, including one hour at 1400F, plus three ten minute chimney fire tests at 2100F.

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