This Support Box DuraPlus is designed to stay cool on the outside, to provide a hot draft on the inside, to boost stove efficiency, and to provide for a fire-safe design that protects both the chimney and the building.

This triple-wall chimney features two insulating layers (ceramic blanket, plus air space). The ceramic blanket insulation is held securely in position, eliminating hot spots common with loose-fill type insulations.

In the event of a creosote fire, the compressible blanket insulation permits the chimney liner to expand outwardly in a radial direction. DuraPlus Chimney is a triple-wall, all-fuel chimney for use with wood stoves, fireplaces, furnaces, boilers, stoves, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas.

• DuraPlus all-fuel - use with flat, vaulted or cathedral ceilings
• 24" tall support box
• For 7/12-13/12 ceiling pitch
• Supports up to 35 ft. of DuraPlus Chimney
• Starter section built in

FOR CALIFORNIA SHOPPERS

Hello Californians! Your government wants us to show you the following message:

• ⚠  WARNING: THIS PRODUCT CAN EXPOSE YOU TO CHEMICALS INCLUDING CHROMIUM WHICH ARE KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER AND BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.