Automatic Chicken/Duck Coop Door Opener Rugged Motor Housing encloses light sensor and pulley for Off-grid application--Opens door with dawn, closes at dusk Streamlined Stainless Steel gate and rails (15-3/4" x 11-7/8") EASY installation guaranteed, complete kit with 4 AA batteries and SELF-TAPPING wood screws and new updated English instructions Precision Crafted, Time Tested Design to withstand harshest environments 30 years track record in saving poultry from the worst of predators