The Under Grate Sediment Bag is designed to fit unobtrusively under a stormwater drain to collect sediment, trash and other floatables from entering the pipes and waterways. It is easily installed under the grate inside the catch basin and does not impede traffic above. It is made of 40 sieve woven polypropylene geotextile fabric to allow for water filtration and sediment retention. It has integrated stormwater overflow ports to prevent flooding during heavy rain events, and is UV resistant, durable and reusable. The one-piece design provides load bearing while the handles allow for easy installation, removal, cleaning, and replacement. It comes in a variety of sizes to fit standard grates. The high visibility green edging is easily seen by workers and inspectors to show that sediment protection is in place. An economical addition to your Best Management Practice (BMP), the Sediment Bag can reduce costly basin and pipe system cleaning. Under Grate Sediment Bag Comes in the Following Sizes: 18"x36", 21"x29", 24"x24", 24"x36", 24"x48", 27"x27", 28"x36", 36"x36", 36"x48", and 40"x55"