Grilles offer a secure means of closing an area, such as a Bar, whilst maintaining the visual effect of the area. A wide range of finishes and styles is available. Types and operation Aluminium - available in a wide range of finishes the interlocking components are supported by horizontal steel rods. Plastic - an attractive range of designs that can match a wide range of internal finishes. The interlocking plastic components are supported by horizontal steel or aluminium rods. Manual - self coil with the assistance of a counterbalancing spring. Single phase electric - 240v Tube motor with optional manual override facility. Components Roller - aluminium or steel tube supported at either end by "end plates". Optional Casing - in aluminium or steel to enclose the curtain assembly. Guide section - The guides are powder coated steel or aluminium, dependent on application.The guides can also be made removable, when the shutter is raised. Bottom rail - aluminium or steel, finished to match the grille curtain. Bottom rail also holds the lock assembly.