This is the stuff I use. The industrial plants around here use it for no slip walkways, and for whatever reason a lot of it ends up at my local scrapyard, where I can buy it at scrap prices. This pic shows probably around $10.00 worth. It has a roughed up top surface, little teeth that stick up slightly, and works better then simple screening for keeping small parts in place when spraying. A 10' length is stiff enough to self support, it has a formed side angle to it, with just end supports. Done painting for a while, so now it's on my bike trail for when the seasonal spring surfaces, making it too mushy, it's great stuff to have around. Get it? Grate stuff!