$160.18
A Duraplus chimney with a filter is fed through the ceiling to prevent the joist from overheating. The revolutionary triple-wall architecture is intended to keep the exterior temperature cool. It erects a fire-resistant framework to safeguard the building's chimney. This chimney component's aim is to improve security within the ventilation system. Features: Triple-wall chimney Clean, smooth exterior finish 2" clearance to combustibles Use when air-cooled chimney is required Outer diameter is 4" larger than inner diameter Use in-ceiling/floor penetrations when a ceiling support is not used Not required when passing through the roof Fits on the underside of the ceiling and adjusts to cover framing. (See installation instructions for proper placement.) Free-floating inner 430-alloy liner maintains structural integrity in chimney fires For uses with wood stoves, fireplaces, furnaces, boilers, stoves, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas Specifications: Size: 7" Inner Diameter Outer: 11-7/8" Length: 16-1/" Height: 16-Inch Width: 16-1/2" Dimensions: 16-1/2" x 16-1/2" Inner Pipe Gauge: 27 Outer Pipe Gauge: 28 Pipe Class: Class A Vent Construction: Triple Wall Weight: 7.1 lbs. Material: Galvanized Fuel Type: Coal, Gas, Oil, Wood UL Listing Number: UL 103 HT Product Type: Radiation Shield Downloads: DuraPlus Installation DuraPlus Product Catalog-Section Duraplus Woodburning Best Practices DuraPlus Product Brochure .