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WELCOME TO PREFERRED ENGINEERING
PARALLEX

PARALLEX Revolutionary hardware system for slider, casement, and double-hung windows.

SLIDE-N-HIDE

SLIDE-N-HIDE This patented screen system retracts into the frame when not in use. Ideal for screen door and window applications.

TILT-N-SLIDE

TILT-N-SLIDE Tilt-in Slider window hardware system for sashes up to 45” wide. The safest in the industry!

EZ-FLO

EZ-FLO Twin-tiered sash drainage system. Helps maintain your window’s weather seal while keeping wind and insects out.

Preferred Engineering Toll Free: 1-800-387-5835