Founded in 1989, this innovative company’s next-generation fenestration hardware systems offer an alternative to traditional window operating products. They are designed for functionality, aesthetics and performance, while making windows easy to clean and easy to use, with maximum ventilation and visibility. Through extensive research and constant customer consultation, revolutionary window systems have been developed that answer both the window manufacturer’s need for profitability and the end-user’s desire for ease of use.

Today, Preferred Engineering boasts four innovative window hardware systems: Parallex™, SLIDE ‘N’ HIDE™, TILT ‘N’ SLIDE™ and HI-FLO WEEPERS.