For Inward Opening Doors with 3mm / 1/4 \" Gap Only – The DoorJammer is a super strong portable door security device that quickly prevents unwanted entry in seconds, with police accreditation and award-winning design. Its patented steel design works on almost any inward opening door, even without a lock or handle, ensuring reliable security wherever you are. It takes only moments to install in the gap under an inward opening door with no tools or permanent modifications required. The DJ3's patented design uses displacement of force to barricade the door against attempted forced entry.

Proven & Tested – The DoorJammer has undergone extensive impact and durability testing, including the renowned PAS24 Impact Test.

Compact & Lightweight – Weighing only 210g/0.46lbs and measuring 108mm/4.25” x 40mm/1.57” x 70mm/2.76”, the DoorJammer is the original portable security solution that easily fits into your bag or pocket. Help ensure privacy on the go or at home with the DoorJammer, providing peace of mind wherever you need it.

Quick Install & Release – Takes only seconds to install and remove. No tools are required to implement this revolutionary portable security device. In an emergency, the unique design allows for a quick release feature that easily removes the DoorJammer with an upward motion.

Highly Versatile – Compatible with all types of flooring, the innovative hinged and angled system firmly anchors the DoorJammer on carpeted, tiled, and laminated floors when external pressure is applied to the door. The DoorJammer must be installed on a flat surface.

CANNOT BE USED ON DOORS WITH WEATHER STRIPPING OR SEALS – Many residential exterior doors will have a raised threshold, flashing, weather strip, or seal etc. that will obstruct the DoorJammer or not allow it to fit properly. You must observe the condition of your exterior door if purchasing for that purpose.

Complete Package – includes DoorJammer DJ3 unit, plush carry bag, foot accessory for stability, spacer set for fit customization, and easy-to-understand instruction manual