Duravent Duratech 8DT-AP17x21 8″ Dia. 17″ X 21″ Transition Anchor Plate

SKU: 8DT-AP17x21,

Brand: Duravent

Original price was: $705.02.Current price is: $634.52.

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Duravent Duratech 8DT-AP17x21 8″ Dia. 17″ X 21″ Transition Anchor Plate

Duratech 8DT-AP17x21 8″ Dia. Transition Anchor Plate. Used when converting from DuraLiner to DuraTech in chimney restoration. Use with a DuraLiner Slip Connector and Hanger.

Proudly made in the USA, DuraVent has been the industry standard in chimney and venting solutions since 1956 and continues to use the time tested methods that have made them such a success for the past 60 years. When you buy a DuraVent product, you know that you are buying a quality product that is designed meet or exceed all industry safety standards and will last for years to come. Designed for appliances that are tested and listed for use with a 2100°F HT chimney system, such as wood stoves, fireplaces, furnaces, boilers, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas.

DuraTech: The optimum in safety and performance for an all-fuel chimney.

DuraTech features light weight insulation, twist-lock fittings, support boxes with factory installed starter sections, elbows with 360° swivel base, select black finish pipe lengths, five foot length pipe sections, and adjustable pipe lengths.

Designed for normal, continuous operation at 1000°F flue gas temperatures, DuraTech is subjected to rigorous and stringent high temperature requirements of the UL standard, including one hour at 1400°F, plus three ten-minute chimney fire test at 2100°F.


  • Limited Lifetime Warranty
  • UL Listed c-UL-us Listed to UL 103 HT and ULC S604 (MH7399)

Also available:

8DT-06 6″ Chimney Pipe – Stainless Steel Inner/Galvalume Outer

8DT-06SS 6″ Chimney Pipe – All Stainless Steel 

8DT-09 9″ Chimney Pipe – Stainless Steel Inner/Galvalume Outer

8DT-09SS 9″ Chimney Pipe – All Stainless Steel 

8DT-12 12″ Chimney Pipe – Stainless Steel Inner/Galvalume Outer

8DT-12SS 12″ Chimney Pipe – All Stainless Steel

8DT-18 18″ Chimney Pipe – Stainless Steel Inner/Galvalume Outer

8DT-18SS 18″ Chimney Pipe – All Stainless Steel

8DT-24 24″ Chimney Pipe – Stainless Steel Inner/Galvalume Outer

8DT-24SS 24″ Chimney Pipe – All Stainless Steel

8DT-36 36″ Chimney Pipe – Stainless Steel Inner/Galvalume Outer

8DT-36SS 36″ Chimney Pipe – All Stainless Steel

8DT-48 48″ Chimney Pipe – Stainless Steel Inner/Galvalume Outer

8DT-48SS 48″ Chimney Pipe – All Stainless Steel

8DT-60CF 60″ Chimney Pipe – Stainless Steel Inner/Galvalume Outer

8DT-60SSCF 60″ Chimney Pipe – All Stainless Steel

8DT-VC  Chimney Cap

8DT-LB Locking Band

8DT-ST Standard Tee w/Cap Stainless Steel Inner/Galvalume Outer

8DT-STSS Standard Tee w/Cap All Stainless Steel

8DT-TSB Adjustable Tee Support Bracket – Galvalume

8DT-TSBSS Adjustable Tee Support Bracket – All Stainless Steel

8DT-RSTC9 Trim Collar for Roof Support 7/12 – 9/12

8DT-RSTC3 Trim Collar for Roof Support 0/12 – 3/12

8DT-RSTC6 Trim Collar for Roof Support 4/12 – 6/12

8DT-RSTC12 Trim Collar for Roof Support 10/12 – 12/12

8DT-IS Attic Insulation Shield

8DT-RRS Roof Radiation Shield

8DT-FRS Firestop Radiation Shield

8DT-FC Finishing Collar w/adapter

8DT-AP17x17 Transition Anchor Plate 17″ x 17″

8DT-AP14x17 Transition Anchor Plate 14″ x 17″

8DT-AP13x21 Transition Anchor Plate 13″ x 21″

Weight2 lbs


Duratech Install manual




M&G DuraVent, Inc. (“DuraVent”) provides this limited lifetime warranty for all of its products with the exception of Ventinox® (lifetime), and PolyPro® (ten years). Subject to the limitations set forth below, DuraVent warrants that its products will be free from defects in material or manufacturing, if properly installed, maintained and used. DuraVent products are fully warranted if installed only by a professional installer. See owners manual for full warranty.

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