GEO 4.5-120NW is a nonwoven needlepunched geotextile made of 100% polypropylene staple filaments. GEO 4.5- 120 NW resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. GEO 4.5-120 NW will satisfy the requirements as outlined in AASHTOM-288-0 6 for Class 3 applications Click here for Product Data Sheet.