Security zone fence hollow post - has blocking lug for recesses on internally operated bolt extending into socket

摘要

Hollow profile posts, and lattice spans detachably held on these with a solid peripheral frame, make up a security facing grill or trellis structure as used round high security zones. For each post (2) there is a ground socket (4) for its non-rotatable insertion. The post contains a bolting device (9), extending upwards beyond its socket insertion area, operable from inside the grill. This has a blocking lug (10) brought into and out of engagement with corresp. recesses (11,12) in the socket and inserted post.