Genie’s ChainMax 1000 garage door opener offers the best in traditional chain drive operation Dependable reliable and longlasting the ChainMax is an affordable option with superior design and quiet performance Count on years of worryfree service with only minimal occasional maintenance needed With a powerful 140volt 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
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