Suitable for securing both single and double sliding aluminium doors. The bolt is engaged by a push button which is only released by key. A six disc detainer mechanism gives 2,000 key variations. Fixing is provided by special tap-tite screws which are concealed when the lock is fitted. It is recommended that locks should be fitted to the top and the bottom of the door. Available in satin chrome finish, supplied 1 lock with 2 keys together with an appropriate drill bit per card, for ease of installation.