DoorJammer : Portable
DoorJammer is the award-winning and police-accredited portable door security device that prevents unwanted entry, fast. Its patented steel design works on almost any in-swinging door, even without a...
A convenient keyring set of spacers to insert in the gap above the door - four sizes are provided.
Spacers are optional and use is not required for DoorJammer to perform as intended, however spacers can provide extra strength in frames with a large gap.
Choose the largest spacer that fits tightly but if too much force is required, select the next size down.