Upgrade or extend your residential venting system safely with this genuine, brand-new DuraVent DuraPlus 6" x 12" Triple-Wall Chimney Pipe (Model 6DP-12). Engineered with dual insulating layers combining a dense ceramic blanket and a ventilated air space, this all-fuel chimney section keeps the outer galvanized steel wall cool while safely venting wood, oil, coal, gas, and wood pellet heating appliances. Listed to strict UL 103HT safety standards for continuous operation at 1,000°F and requiring just a 2-inch clearance to combustibles, its precision die-formed twist-lock ends snap tightly together in seconds without messy sealants. Please note that while the heavy-duty triple-wall pipe section itself is brand new, pristine, and completely uninstalled, the original exterior retail cardboard packaging details exhibit basic shelf wear and minor scuffing from warehouse storage; the chimney component itself remains physically flawless and fully prepared for immediate installation