The Concept

It is a sad but true statement that America has greater experience in safely locking down buildings than we do in the UK. They have used that experience to develop a simple but highly effective solution to keep occupants safe. 

The door frame is a weak point that will fail before the door. By using Ground Force's patented design the strength comes from the floor. 

Ground Force® makes non-mechanical, floor-anchored barricade devices that allow a teacher to lock down a classroom door in one simple motion — no keys, no wiring, no screws, no dependence on the door or frame.

Force is transferred into the floor slab rather than relying on screws in the door and frame — the part most easily compromised.