Fiberglass wallcovering Fibreglass wallcovering, made of natural materials such as silica, soda, lime and dolomite, is non-toxic and non-smelly. It is woven through special processes from fibers that are produced under temperature up to 1200íµ. With unique safe and environment-friendly properties, njefg brand fibreglass wallcovering is a new type of green building material with environmental protection effects. Specification: Weight: 45-200 g/m2 Roll width: 1 m Roll length: 25/50 m Supplied in rolls wrapped with plastic film and contained in cartons.