Unionfull's 4oz e-glass surfboard fiberglass fabric is 6522 cloth. It is woven in plain weave. Thread count is 9.6 / 8.7 per cm. Fiberglass fabric is a high tensile strength, durable, chemical resistant and fire resistant material. This fabric is light weight and easy to be wet out by most resins. So it is always used for surfboard manufacture, same as 6oz and 8oz fabric.
Fiberglass fabric is able to resist heat below 550℃ continuously. Except for surfboard application, this 4oz fiber glass fabric can be used in many other fields, such as boat/yacht building and repair, septic-tank production, coated fiberglass fabric, wire electrical insulation and printed circuit board.