... length +/- 4% on thicknessFeatures of PVC Foam Board, PVC Hard Plastic Sheet 1) Light weight,waterproof, Antiflaming and self-extinguishing,etc2 ... , heat preservation and anti-corrosion 3) Tough, rigid with a high impact strength,not easy to age and can keep its ... Property:self distinguishing lower than 5 seconds away from fire High Density Plastic PVC foam sheet waterproof pvc flexible ...