BIG 6 profile fibreglass sheets are 1086mm (3 ft 6 inch) wide giving a 1M (3ft 3 inch) cover width. These sheets are very strong and often used as light panels in garages with fibre cement roofs. These sheets are class 3 fire rated and are 1.83 kg per square meter, designed for general domestic buildings. Heavier duty versions are available to special order.