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The UltraTech 9859 Grate Guard, Sediment Model is a high-flow curb-style stormwater inlet protection device designed for 18" x 36" flat grate catch basins. It slides onto the storm drain grate and uses heavy-duty hook-and-loop fasteners to secure a high-flow woven sediment filter, allowing maintenance and cleanout at street level without removing the grate. Configured as a sediment-only, curb-style unit with no overflow ports, it provides controlled sediment capture while maintaining stormwater flow at curb inlets.
- 18" x 36" Grate Coverage – Sized to fit 18" x 36" (457 x 914 mm) storm drain grates, providing curb-style coverage for sediment and debris control at flat grate catch basins.
- Curb-Style with 44" Deflector – Curbside configuration with a curb deflector (44" per product title) to intercept runoff along the curb line and direct it into the filter area for improved capture efficiency.
- High-Flow Sediment-Only Design – High-flow woven filtration media allows stormwater to pass while capturing sediment, silt, and debris, with no oil-absorbent media and no overflow ports.
- Hook-and-Loop Grate Attachment – Slides over the storm drain grate and secures with heavy-duty hook-and-loop fasteners, enabling cleaning at street level using a broom or shovel without grate removal.
- Durable, Reusable Construction – Manufactured from durable, high-visibility polypropylene, high-flow woven fabric with a large containment area, designed for repeated cleaning and reuse in stormwater BMP programs.
Product Specifications:
| Model Number | 9859 |
| Product Type | Grate Guard – Sediment Only Model, High Flow, Curb-Style, No Overflows |
| Dimensions | 18" L x 36" W x 4" H (457 x 914 x 102 mm) |
| Curb Deflector Length | 44" (per product title configuration) |
| Grate Compatibility | For use with flat grate catch basins and curb-inlet style storm drains sized 18" x 36" |
| Material | High-flow woven polypropylene stormwater filtration fabric with hook-and-loop closure system |
| Filtration Type | Sediment, silt, and debris control (sediment-only configuration) |
| Flow Capacity | High-flow design for stormwater runoff; no overflow ports |
| Installation Method | Slides onto storm drain grate and secures with heavy-duty hook-and-loop fasteners |
| Maintenance | Sediment and debris removed at street level using broom or shovel; unit is reusable and cleanable |
| Weight | 2 lbs (0.9 kg) |
| Compliance | Helps support NPDES, 40 CFR 122.26 (1999) and TMDL stormwater management requirements when used as part of BMPs |
| Color | Green (high-visibility stormwater fabric) |
| Country of Origin | Not specified by manufacturer (verify with purchasing documentation if required) |
| Brand | UltraTech International |