Replace messy hay bales and keep sediment and oil from entering drains and inlets
- Prevents silt, sediment and hydrocarbons from entering storm drains
- Provides visual indicators to storm drain locations
- Helps comply with NPDES, 40 CFR 122.26 (1999) when used as Best Management Practice in Storm Water Pollution Prevention Plans.
- Two standard sizes: Part # 9292 fits up to 24" x 24" grates. Part # 9293 fits up to 4' x 6' grates.