Prevents Pollutants: Storm Sentinel Curb Inlet Filter blocks harmful sediment, trash, and debris from washing into storm drains. Reuseable until full and no longer filtering out the water. Efficient Design: Rigid coiled center filter catches pollutants while allowing stormwater to easily pass through. This design feature allows for a steady stream of water and does not backup the water flow system. Secure Fit: Optional weights help hold the filter securely in place over curb inlets. No special tools are needed for intallation, simply use the hook strap to secure the bag ti the curb inlet insert. These weights also absorb a small amount of hydrocarbons. Customizable: Available in custom sizes to fit various curb inlet dimensions. Standard sizing is 48 in. (121.9 cm.) in length and 5 in. (12.7 cm.) in diameter. Available in the standard design or with oil absorbing packets (IB) which has an absorption capacity of 0.28 gallons (1.05 L.) Versatile: Combine with Catch Basin Inserts for optimal stormwater filtration and pollution prevention. Available and useful on multiple different drain sizes and can be used in industrial or residential areas. The Storm Sentinel Curb Inlet Filter is an innovative solution for preventing harmful pollutants from washing into storm drains. Designed with a rigid coiled center filter, it effectively catches trash, sediment, and debris, while allowing stormwater to pass through easily. Made of durable black material, it is waterproof and UV resistant, ensuring long-lasting performance. Optional weights are available to hold the curb inlet filter securely in place. For optimal use, combine it with Catch Basin Inserts. Custom sizes are also available to fit your specific needs. Protect your local waterways and comply with environmental regulations by installing these efficient curb inlet filters. With their sturdy construction and effective filtration capabilities, Storm Sentinel Curb Inlet Filters are an essential tool for responsible stormwater management. Availale by itself or with an Oil-Absorbing packet included.