Door Services Australia offers the DSA Type 06 expanding security system. This system contains an expanding trellis framed with rigid suspension track on the top and bottom guide rail. These doors are designed from 20mm x 5mm solid steel flat bars and 20mm square steel tubing. The door jamb is designed in such a way that a partially enclosed lock style is formed when the door is locked. The bottom guide rail comes as a removed, lipped channel or fixed self cleaning type. The rivets are made of solid brass which are rust proof. For long life and to gain strength the rivets are designed with a non pivoting function.
The locking features are designed to have three-point locking with double hook, slam-locking feature and slam-door instant locking without using key. The expanding door system from Door Services Australia, comes in four standard highgloss, baked epoxy powder coatings. All doors are custom measured to fit and reveal the best possible appearance. DSA 06 Expanding Security System is fully-framed and heavy duty, in which, within seconds the door closes and locks. It is ideal for banks, shops, hotel and bars, to give a few examples of usage. It is made of 95 per cent solid steel for good strength, is burglar resistant, with static load testing and comes fitted with a slam-lock.