Crimped on both ends, this Imperial 6-in stove pipe union connector lets you join two non-crimped ends of round pipe or fittings together. Engineered for durability and performance, the single-wall pipe connector is made with 24-gauge cold-rolled steel and features a black matt finish that is resistant to chips and scratches. It has a maximum temperature rating of 700°F, with a short-term exposure rating up to 800°F. The stove pipe union fits 6-in round pipe.