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Frank Pattern & Mfg. invented the Instant Set® connection in 1968. Since then they have been the industry leader in light commercial plumbing drainage products that utilize the mechanical joint pipe connection. There is only one Instant Set® and thats Frank Pattern Instant Set® They offer top quality cast iron Closet Flanges, Floor Drains, Roof Drains, Area Drains, Floor Access Covers, Cleanouts and other high quality drainage products. “The Original Baby Blue”