Window Restrictor

This is a window restrictor designed for top-hung windows.It limits the window opening while allowing controlled ventilation. After being notified that my previous model was similar to a patented design, I removed it.This is a completely new design developed from scratch, featuring new functionality and different operating principles. Key improvements:Supports much larger window openings using a slider-based extension mechanism.Screw-based adjustment and locking for precise positioning.Significantly increased mechanical strength, suitable for high-wind environments.No print supports required.Designed for easy printing, installation, and reliable long-term use.