GEO 7.0-840W is a woven high tenacity monofilament filtration geotextile made of 100 % polypropylene yarns. This product is specifically designed for drainage andfiltration applications. This product's Percent Open Area of 8%, gives it excellent hydraulic properties and high flow rates, while reducing the chances of clogging. GEO 7.0-840W resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. GEO 7.0-840W meets the following M.A.R.V. values except where noted. Click here for Product Data Sheet.