Selkirk Corporation 6T-EL15 KIT 6 Inch Ultra-Temp Elbow Kit 15 Degree Designed for use with 6-inch inner diameter chimney pipe Elbow kit includes - 2 elbow sections 2 locking bands and 1 interior resupport The 15-degree insulated elbows can be used for fixed offsets of 15-degree slopes or in pairs for offsets adjustable from 0 to 31 degrees slope Elbows rotate 360 degrees to create the exact angle desired Greater angles than those described above are prohibited by UL Standard 103 and by the terms of the product listing Locking bands -included must be used at each joint