For 6mm Glass Used on All Types of Glass Sliding Doors Anti-Spread Housing Chrome Finish CRL “Tamper Proof” Sliding Glass Door Locks have an improved design that includes a housing that prevents spreading of glass doors. Fits any sliding ‘all-glass’ door, many wood and metal doors, too. They’re easily attached – you don’t need tools. Durable construction, finished in rustproof chrome. For overlaps of 19 to 86mm. Bar width is 16mm. Keyed randomly.