This revolutionary development in GRP closed tool moulding, allows us to make a complete double sided finished base with no weak seams or joints. This is the first base unit ever to be made by this process. Fully insulated with polyurethane foam this base unit forms your internal & external sills. Comes complete with fixing bracket and GRP bracket cover (BRG10 or BRG11 dependent on size) Available in 3 shades of white to match most profiles, chocolate brown, light oak or rosewood. Available in 1800 & 2400mm.