A minimum of ONLY 6" is required between the Ceiling/Wall and Double Wall Stove Pipe, or 18" for Single Wall Stove Pipe. Step 4 - Install the Stove Pipe. All-in-one kit saves time and guesswork. We respect your privacy and promise to never spam you. This is frowned upon by most codes, inspectors and professionals. Pair it with chimney cleaner or conditioner for an easier clean. 8693 M&G Duravent Inc. $119.99. Duravent 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. Generally, for a wood burning appliance installation, an 18” minimum clearance to combustibles must be maintained for a single wall flue pipe. It has the ability to pass through combustibles with minimum clearances and meet building codes. Click here to use our interactive tool, and get a quote by email! FREE Shipping by Amazon . Please feel free to contact us for inquiries in such situations at: