ENPAC Round, Bag Style Storm Sentinel® Catch Basin Insert, Adjustable, 25" to 28"(MPN: 4340)

Description

The Storm Sentinel® Catch Basin Insert helps prevent harmful pollutants, debris, and sediment from entering storm drains. This round, bag-style framed model features an adjustable steel wire frame for quick, secure installation and easy removal.

Its low-profile design sits below the grate, keeping it discreet while maintaining effective filtration. Geotextile fabric captures sediment and contaminants, while overflow bypass ports manage high-flow storm events to prevent water backup.

This model is reusable until it no longer maintains adequate water flow and requires no special tools for installation. It meets compliance requirements for Storm Water Pollution Prevention Plans (SWPPP).

Key feature

• Adjustable frame fits 25" to 28" diameter drains
• One-person installation and removal
• Low-profile below-grate design
• Geotextile fabric filters contaminated sediment
• Overflow bypass ports for high-volume storms
• Reusable until flow performance declines
• Complies with SWPPP requirements
• U.S. Patent No. 10,384,155
  

Specifications

• Material: 8 oz. Non-Woven Geotextile
• Country of Origin: USA
• Diameter: Adjustable 25 in. (63 cm) to 28 in. (71 cm)
• Bag Depth: 14 in. (35.56 cm)
• Weight: 1 lb. (0.5 kg)
• Flow Rate: 90 gal. (340.69 L) per min. per sqft.
• Load Capacity: 40 lbs. (18 kg)
• Regulatory Compliance: 40 CFR 122.26, EPA, SPCC, NPDES
  

Documents

View Catalog Page:
Catalog Page 88

View Product Instructions:
4340, 4340-22 Storm Sentinel Instructions

View Product Instructions:
BMP Maintenance Log

View SDS:
Oil Only Absorbing Packet SDS

View Regulations:
Codes and Regulations

Shipping & Warranty

Shipping Information

• Manufacture Lead Time: 1-2 Week Lead Time 
  
• Ships From (State): OH
  

Products are subject to freight or parcel shipping costs. Shipping charges are calculated at checkout based on delivery location, product size, weight, and carrier requirements.

Each tank is manufactured and assembled in the USA using high-quality materials and strict quality control standards—built for long-term, dependable use in demanding applications.

Warranty Information

Warranty coverage varies by manufacturer and product type. For warranty details or to initiate a warranty claim, please contact Tank Supply Direct at info@tanksupplydirect.com.

Price Match Guarantee

If you find the ENPAC Round, Bag Style Storm Sentinel® Catch Basin Insert, Adjustable, 25" to 28" (MPN: 4340) offered by an authorized distributor at a lower price within 6 months of purchase, we will match the price and refund the difference.

Contact: info@tanksupplydirect.com