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MillerEdge :: Gate Pros :: Specify Sensing Edges to Comply with Safety Standards for Motorized Sliding Gates
Amazon.com: CO-Z Automatic Sliding Gate Opener with 2 Remote Controls, Electric Rolling Driveway Slide Gate Motor, Complete Gate Operator Hardware Security System Kit for Sliding Gate Up to 40 Feet : Tools
ALEKO AC1400 40 ft. Length and 1400 lbs. Capacity Gate Opener Kit for Sliding Gates AC1400ACC-HD - The Home Depot