At Preferred Engineering we engineer quality fenestration hardware systems for the window manufacturing market. The unique features and ease of incorporation of our hardware systems allow manufacturers to produce superior windows at little or no extra cost.

Tilt'N'Slide Tilt-in Slider window hardware system for sashes up to 45?wide. The safest in the industry!	Parallex Revolutionary hardware system for slider, casement, and double-hung windows.
Slide'N'Hide This patented screen system retracts into the frame when not in use. Ideal for screen door and window applications.	Hi-Flo Weepers Engineered Weeper designed to maximize flow rate when experiencing the low pressures found in window and sliding door sills.