Cell plastic, the first large roll in the picture, with a width of 200 cm, has a thickness of 12 mm and is in one roll about 60 meters long, a total of about 120 square meters, this roll has a 2-quality plastic, but acts as insulation, for example, is very heat-resistant ,suspended cell plastic, efficient scrap and heat protection , including yard construction,and all kinds of thermal insulation. Suck water, it's tough, it doesn't crumble between the layers of ground, like hard insulation plates..Collections are easy to work on and can be well shaped around the item being insulated..There are several reels;Disable rollers at a time, as many as there are warehouses!(Please check out other sizes if this roller is not suitable?)