Ultra-Storm Guard® Manufacturer: UltraTech Part #: 988X Description: Ultra-Storm Guards are designed to go into storm drains where plastic pellets or nurdles are often carried to via wind and/or rain water. There are three different models: (1) The Ultra-Storm Guard (2) The Ultra-Storm Guard HD and (3) The Ultra-Storm Guard HDC. The difference in each model is the size pellet or particle it is able to effectively capture/contain. Helps comply with Operation Clean Sweep and other “zero plastic resin loss” programs. *All Ultra-Storm Guards Can Be Custom Sized. Call For Quote* Ultra-Storm Guard: Designed to capture microplastics left behind from plastics manufacturing plants. Captures larger items and floatables like leaves, cigarette butts, paper goods and other debris. Easy installation: simply raise the grate, place the Ultra-Storm Guard over the opening, and carefully lower the grate back in place. Ultra-Storm Guard HD: *Custom Sizes Only, Call For Quote* Heavy-duty catch basin insert captures and contains plastic pellets and other contaminants. High-strength, 5000 series aluminum construction. Built in, stainless steel screens filter out plastic pellets and other particles that are 1.5mm (1,500 microns) or larger. Ultra-Storm Guard HDC: Heavy-duty, aluminum construction catch basin insert captures and contains plastic pellets and other contaminants using removable/ replaceable filtering cartridges. Cartridges filter out plastic pellets and other particles that are 1.0mm (1,000 microns) to 5.0mm (5,000 microns) in size. Different cartridges are available depending on target pollutant(s).