Xpanda Security can supply a heavy duty roller door grille that provides a practical solution for a number of security applications where aesthetics, visibility and or airflow would be required. The roller door grilles are made to order, to fit any size opening. Horizontal 19mm aluminium tubes spaced 50mm apart by high tensile aluminium links to form a brickwork pattern. Extruded heavy duty aluminium captive guide channel 50mmx50mm deep, fixed behind door jambs or recessed into walls and incorporating a mohair strip to reduce wear, thus making for quieter operation and extending the life of the door. The doors can be motorised but additional clearances would be required. Practical applications are for larger openings and include shopping malls, Supermarkets, car parks and arcades. Powder coating optional.