Tough, clear polycarbonate. Supplied as three panels joined by polypropylene hinges. Adjustable, can be used as a tight triangle or extended out to a straight line configuration. Suitable for classrooms, laboratories and factories. Stronger than armoured glass giving maximum protection from flying glass, hot liquids and other hazards. The material has a very low flammability being self extinguishing (passes BS2782 part 5 1970 Methods 508A and 508D) (Din 4 102). The bases consists of a pair of plastic coated metal feet measuring 60 x 150mm and weighing 700g. The bases can be clamped or bolted onto the bench to give greater stability. Each set is supplied with two base sets but without clamp.