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Craftsman ½ HP Chain Drive Garage Door Opener with 2 Multi-Function Remotes & Keypad Home Tool Equipment 54985 - Walmart.com
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Genie Chain Drive 750 3/4 HPc Garage Door Opener w/Battery Backup - Heavy Duty - Operate your garage door when the primary power is out - Wireless Keypad Included, Model 7035-TKV,BLACK - Amazon.com
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