The ENPAC Frameless, Cone Style Storm Sentinel® Catch Basin Insert is an ideal solution for preventing harmful pollutants from entering storm drains. This frameless model is simple in design, powerful in protection, and one of the most affordable catch basin inserts on the market.
Its frameless design allows you to cut the fabric to size, making installation customizable and easy. The insert sits below the grate, keeping it low-profile and unobtrusive. Made from 8 oz. non-woven geotextile fabric, it prevents contaminated sediment from washing into storm drains while maintaining proper water flow.
Standard versions include overflow bypass ports for high-flow storm events, which help prevent storm water backup around drains. The insert is reusable until it no longer maintains adequate water flow and requires no special tools for installation.
Complies with regulations when used in Storm Water Pollution Prevention Plans, and features an optional oil-absorbing Spilltration® sorbent insert to fully capture oils and hydrocarbons.
Key feature
Frameless design allows cutting fabric to size
One-person installation and removal
Sits below grate for low-profile, unobtrusive placement
Made with 8 oz. non-woven geotextile fabric
Prevents contaminated sediment from entering storm drains
Overflow bypass ports included in standard versions to prevent water backup
Reusable until water flow is insufficient
Requires no special tools for installation
Complies with storm water regulations
Optional oil-absorbing Spilltration® sorbent insert available
Options available:
4320-NO (No Overflow)
4320-IB (Oil Absorbing)
Specifications
Material: 8 oz. Non-Woven Geotextile
Country of Origin: USA
Dimensions (L x W): 36 in. x 48 in. (91 cm x 122 cm)
Ships FOB from Caldwell, Idaho (Zip Code: 83605). Freight charges vary depending on destination and shipment size.
Includes a 1-Year Limited Warranty covering defects in materials and workmanship under normal use.
Price Match Guarantee
If you find the ENPAC Frameless, Cone Style Storm Sentinel® Catch Basin Insert (MPN: 4320) offered by an authorized distributor at a lower price within 6 months of purchase, we will match the price and refund the difference.