Allows for 4 in. diameter round pipe to connect to 6 in. diameter round pipe. Sturdy, 24 gauge construction designed for optimal heat efficiency and long-term use. Crimped on one end to easily fit into pipe or fitting of the same diameter.

• • Used to increase diameter of galvanized round perimeter pipe
• • For all heating, air conditioning and venting where rigid pipe is required
• • Easy to use
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