Genie's ChainMax 1000 garage door opener offers the best in traditional chain drive operation. Dependable, reliable and long-lasting, the ChainMax is an affordable option with superior design and quiet performance. Count on years of worry-free service with only minimal occasional maintenance needed. With a powerful 140-volt DC motor suitable for residential garage doors up to 7' height (8' with use of extension kit sold separately), you get smoother door travel and easier installation.Find the GARAGE OPNR CD 1/2HP at Ace.
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