Selkirk Sure-Temp 8-Inch Stainless Steel Round TopThe MetalBest Chimney System is ideal for venting residential heating appliances burning wood, #2 oil, and natural and LP gas. Part of the chimney system roof assembly, the Round Top is designed with a dome to exclude rain and leaves and a lower skirt to deflect wind for proper chimney draft. In the Sure Temp Type HT Chimney (5", 6", 7" and 8" sizes) the Round Top is designed with three legs that slide down over the outside of the chimney. A cinch