• Aluminium - with anodised or powder coated finish.  Punched vision slots are often included.
• Timber - made in selected hardwoods and finishes for decorative effect.  The laths are connected by fabric webs, brass or steel straps slotted through, or at the back of the shutter.
• Manual - self coil with the assistance of counterbalancing spring.
• Manual geared - with gearbox fitted to the end of the roller with a drive to an eyelet that is operated by a cranked detachable or fixed rod.
• Electric - driven by a tubular geared motor contained with the roller.

 
Components

• Roller - aluminium or steel tube supported at either end by end cheeks.
• Shutter box - in roll formed aluminium, steel or timber to enclose the roller assembly.
• Guide rail – extruded aluminium centre and corner posts can be made removable when the shutter is raised.
• Bottom lath – aluminium, finished to match the grille curtain, usually incorporating a bottom rail lock.

 
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