Chimney pipe sections are designed to twist lock together and use a locking band supplied with chimney section to secure the connection. No screws are needed to secure the chimney in place. Chimney pipe sections are offered in various lengths from 8" to 48". This 36" pipe length is actually a full 1 meter, 39". Pipe lengths cannot be cut down or otherwise modified. See 6a-18a for adjustable pipe. The Shasta Vent all-fuel ht chimney is commonly used for venting residential wood stoves, fireplaces and furnaces. It is suitable for oil, coal, wood, natural gas, & propane burning appliances. It is also commonly used for zero-clearance factory built fireplaces & other natural draft heating appliances. This ss, double wall, class a chimney system is tested to 2100 degrees and is etl listed by Intertek to the ht requirements of UL 103.