For the hinge pin side of the door
It will fit over a standard parliament hinge and can also be adapted for larger openings.
Initially developed for the American Government this model fixes to the door frame and outside edge of door forming a protective seal over the hinge. We can supply special models to cover parliament hinges.
Please Note - Not all doors require this product. If a door opens onto a wall, MK1B will not be required as the gap on that side cannot be accessed. If the hinge side can be accessed then check that there is a gap wide enough to allow a small finger to be inserted. If not, MK1B will not be needed. It is not necessary to buy this product in sets, hence you only buy what you need.