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FIBERGLAS™ Pipe Insulation is a family of glass wool pipe insulation products consisting of a cylindrical form molded of heavy density resin bonded inorganic glass fibers produced in one-piece, 36 in (914mm) long, hinged sections; it is used in a variety of mechanical applications, including HVAC and plumbing, in both commercial and industrial buildings, requiring the use of pipe insulation. FIBERGLAS™ Pipe Insulation products are made either with FlexCore technology enabling a core with greater flexibility, which more easily compresses over pipe fittings, or with RigidCore technology enabling a core with greater rigidity, which permits fast and easy fabrication on larger pipes. It comes either jacketed with factory-applied ASJ Max or as unjacketed No-Wrap. To meet the needs of different types of piping applications, FIBERGLAS™ Pipe Insulation is available in a wide range of inside diameters and insulation wall thicknesses.