The Erosion Control Blanket P42 is a Turf Reinforcement Mat (TRM) made of 100% polypropylene fiber (green or tan) designed for critical slope and channel applications requiring permanent erosion control and turf reinforcement. The matting is sewn together on 1.5 inch (38.1 mm) centers. The P42 meets all requirements established in the FHWA FP-03 as a Type 5 A, B, and C turf reinforcement matting for use on slopes with gradients up to 0.5:1 (h:v) and has been tested by the National Transportation Product Evaluation Program (NTPEP). The P42 comes packaged in clear shrink-wrap with a blue band and includes installation instructions. The P42 comes in convenient 67.2 m² (75 yd²)rolls.