Double tube security retainer for window or door has doubled tubes with ends mounted in holders attached to door or window frame

摘要

The double tube security retainer for a window or door in a building has two tubes which can be assembled by insertion and having holders (1) at the ends (3) to receive them. The double tube end has a movable lock connected to the tube by screwing or plug in connection. The tube holders can be mounted directly on the window or door frames.