Selkirk Universal Wall Band (UltimateONE)Selkirk Universal Wall Band Provides lateral support for the chimney when installed adjacent to a wall. Provides more than 4" of horizontal adjustability to clear some overhangs and obstructions. Required at 8 foot or closer intervals to stabilize the chimney, whenever it is supported along a vertical wall. Ultimate One Chimney UltimateONEs inner liner and outer casing are constructed of all welded 304 stainless steel for superior strength and