DoorJammer Lockdown - Award-Winning, Heavy-Duty Portable Door Security Barricade Enhance your safety with DoorJammer Lockdown, the police-accredited, heavy-duty portable door security device engineered to transform inswinging doors into instant strongholds. Trusted globally by schools, offices, medical facilities, and public buildings for its reliability and rapid deployment. Built with a patented steel design, DoorJammer Lockdown creates a strong physical barrier against forced entry in seconds. It works on almost any inswinging door - even if the door has no lock or handle - and installs quickly by simply turning the screw. Why Choose DoorJammer Lockdown? Proven & Trusted – Award-winning and police-accredited for reliable door security. Versatile Protection – Perfect for schools, offices, businesses, and public buildings, adding an extra layer of protection during lockdowns and emergencies. Easy to Use – No tools required; installs in seconds. Fast Deployment in Emergencies – Designed in collaboration with emergency services, includes a quick-release function for immediate removal. Robust & Reliable – At 810g and 192mm tall, this XL model is twice the size and power of the standard Portable version - perfect for commercial and high-risk environments. Patented Stability – Advanced hinge-and-angle design redirects force downward, anchoring firmly on all floor types: carpet, tile, wood, laminate, etc. DoorJammer Lockdown is ideal for emergency security in classrooms, offices or public spaces, can be rapidly deployed during lockdown scenarios and can be used as a temporary security aid in hospitality and healthcare environments. Important for proper use of the DoorJammer Lockdown: It needs to be set on a flat surface. No weather seals or protective strips - Many residential front doors will have a riser, flashing, weather stripping or sealing etc. that will impede the DoorJammer Lockdown or not allow it to fit properly. You will need to observe the condition of your front residential door if buying for that purpose. There needs to be a 3mm / 1/4" minimum clearance between the bottom of the door and the floor to fit the DoorJammer Lockdown. Designed for inswinging/inward-opening doors only. Increase security and enjoy peace of mind with DoorJammer Lockdown - your door safety solution and door lock alternative.
