The Mut-T-Lock 4-Way Locks (235, 265) can be installed inside wood or metal doors to provide 4-way multi-bolt locking. Very common on high security commercial doors these centre locks connect to vertical and horizontal shootbolt extentions to offer 4 way locking and a very high security solution. These locks feature Key Wind operation requiring Mu-T-Lock cog cam type cylinder. The key can also retract the latch, but lever handles are also available to suit these locks (Mul-T-Lock SH300 type furniture) 

The 235 model (S93466) features 3 x 12.7mm finger bolts, where as the 265 model (MUL265) features 4 x 10mm finger bolts.