ASHT is a double-wall, all-fuel chimney system for use with wood stoves, wood fireplaces and other appliances using wood, oil, gas, or coal. The use of stainless steel, selected for its resistance to high temperatures and corrosion, lends outstanding durability to the ASHT high-temperature chimney.

ASHT features 1" of high-temperature mineral fiber insulation. This insulation minimizes heat loss through the chimney walls and can withstand intense heat. The free-floating inner lining is attached only to the male coupler at the top, expanding and contracting freely with temperature fluctuations. The external casing carries the structural load. All ASHT pipe lengths, elbows, and other fittings feature fast and easy twist-lock assembly with just one-eighth turn. Even better, ASHT uses universal support hardware to speed up installation and to dramatically reduce the number of SKUs you need to keep in inventory.

What's Included

• Pipe Length

Features

• Available in 6″ to 8″ inside diameters
• Available in 8″, 12″, 18″, 24″, 36″ and 48″ lengths
• Alu-Zinc outer casing for 6", 7", 8" (For USA only)
  
• Lengths twist-lock together with just an 1/8th rotation
• ASHT line offers double-wall, 1-inch insulated chimneys.

Specifications

Technical Dimensions

Documents & Files

• Secure Temp ASHT Product Catalog
• Secure Temp ASHT Installation Instructions
• Duravent Group Global Warranty

Warranty

Industry’s BEST Limited Lifetime Warranty. Unlike most others, our warranty is TRANSFERABLE to a future owner. Adds value for both the homeowner and prospective homeowner.

Duravent Group warrants our Global Residential Chimney & Venting products to be free from defects in material and workmanship at the time of manufacture. This warranty is only applicable to Products purchased through a listed/approved DGV brand customer. For Products installed after January 1, 2024, we will provide replacement product with a similar or like quality of available Duravent Global Product, free of charge (excluding any installation costs) for a period of ten (10) years from original installation. From the tenth (10th) anniversary of original installation through the fifteenth (15th) anniversary of original installation, we will provide replacement product at a cost of 75% off the published Retail Price in effect on the date we receive the claim (excluding any installation costs). At expiration of the fifteen (15) year period, we will provide replacement Product at a cost of 50% off the published Retail Price in effect on the date we receive the claim (excluding any installation costs). This warranty coverage is transferable from the original owner to the subsequent owners but only applies to products that remain at the site of original installation. The warranty period shall commence on the earlier of 24 months following the date of product shipment or the date of original installation.

Frequently Asked Questions