Profile: Dorene, LLC is a manufacturer of gate openers, entry stations, and gate hardware components. Our product line includes gate openers, wheels, roller guides, swing and sliding gate opening equipment. Our DRT 3520 sliding gate opener features a pause circuit (Anti-Tailgate), electronic brakes, adjustable timer (0-63 seconds) and advanced adjacent obstruction sensor. Our single roller guide assembly features 1/2" stainless steel shaft, 1.75" removable, non-marking UHMW roller, and is available in black color.