Xtra Gel Grading: Heavy Contract Fibre Content: 100% Polypropylene Fibre Weight: 1150 gsm Total Weight: 1760 gsm Backing: Rot Proof Water Resistant Gel Pile Height: 2mm Total Height: 5.9mm Flammability: Hot Metal Nut Test BS 4790. Low Radius of Ignition Width: 4m Roll Length: 25m approx