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Preferred Engineering Products offers a revolutionary hardware system designed to make window operation a breeze.

The patented Parallex system offers unmatched ease of use with a single handle operation for slide, tilt and multi-lock function on hung and slider windows. Our unique casement and awning hardware completely eliminates the use of a crank. Parallex is effortless and safe to operate while delivering improved ventilation, maximized egress, and increased security from hidden locks.It’s no wonder homeowners ask for Parallex by name.

With Parallex hardware, window sashes swing inward to offer increased ventilation, while making cleaning exterior glass a snap. The optional SLIDE‘N'HIDE integrated roll-away insect screen provides increased visibility.

Parallex is available for use in any of the following window applications:

Casement Windows	Hung Windows	Slider Windows

By offering quick operation and maximizing the opening space, Parallex, allows for faster emergency exits, while hidden locks prevent tampering and break-ins for increased peace of mind.

The Parallex system has undergone rigorous performance and safety testing and can be engineered to meet the certification requirements of your windows.

Increase profitability and lower production costs by producing casement, tilt-in slider or double-hung windows with one hardware system.

Preferred Engineering offers step-by-step assembly instructions with the Parallex video and assembly guide. The engineering group is available to help you customize Parallex to fit your needs. Product trouble-shooting in the field or in the manufacturing plant, complete 3D Solid Edge design equipment and in-house testing facilities are all available to help give your customers maximum performance quickly and cost-effectively.

At Preferred Engineering, we’re committed to providing innovative solutions to your window hardware problems. Contact us today to find out how we can help you make the right choice.