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8" Duratech Wall Thimble 9643
8" Duratech Wall Thimble

Our Price: $207.64

Availability:: Usually Ships in 24 to 72 Hours
Product Code: 8DT-WT


The DuraTech Wall Thimble adjusts from a minimum of 4" to a maximum of 10", and fits between standard wall studs. To accommodate thicker walls, the telescoping pieces can be separated, and a field-fabricated extension installed. The interior trim ring is painted black. The Thimble must be installed with DuraTech Chimney pipe horizontally through the wall and extend 6" into the room beyond the interior wall.

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
  • Clearance: 2
  • Listings: Listed to the UL 103 height standard, UL file #MH7399. Listed to the Canadian S610 standard
  • Interior trim ring painted black
  • Item Weight: 9.38 LB
  • Dimensional Weight: 10.00 LB
  • Model: 9643

  • 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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