Customised, factory finished, designed for easy and rapid “snap-on” installation, Fiber Glass Wool Preformed Pipe Sections are a one piece moulded insulation made from glass fibers bonded together with a high temperature resistant binder for pipe diameters from 20mm NB to 300mm NB. Fiber Glass Wool Preformed Pipe Sections are available with and without factory laminated aluminium foil facings.