ENPAC Rectangular, Cone Style Storm Sentinel® Catch Basin Insert, Adjustable, No Overflow, 16"x20" to 28"x36" (MPN: 4341-NO)

Description

The Storm Sentinel® Catch Basin Insert is engineered to stop harmful pollutants, sediment, and debris from entering storm drains, helping maintain compliance with EPA, SPCC, and NPDES requirements. This rectangular, cone-style model is equipped with an adjustable steel wire frame that fits drain openings from 16"x20" to 28"x36", ensuring a secure fit for varied basin sizes.

The no overflow bypass configuration forces all captured stormwater through the geotextile fabric, maximizing filtration efficiency. Its cone-shaped design increases debris capacity without interfering with grate placement, while installation and removal are fast, simple, and require no tools. The insert is reusable until it can no longer maintain adequate water flow. 

Key feature

• No overflow bypass – all water passes through filter fabric
• Adjustable steel wire frame fits multiple rectangular drain sizes
• Cone-style design for increased debris capacity
• Low-profile installation beneath the grate
• Tool-free, one-person installation and removal
• Geotextile fabric blocks contaminated sediment
• Reusable until water flow is restricted
• Optional oil-absorbing Spilltration® insert
• U.S. Patent No. 10,384,155
  

Specifications

• Material: 8 oz. Non-Woven Geotextile
• Country of Origin: USA
• Minimum Dimensions (LxW): 16 in. x 20 in. (40 cm x 50 cm)
• Maximum Dimensions (LxW): 28 in. x 36 in. (71 cm x 91 cm)
• Cone Depth: 18 in. (45 cm)
• Weight: 1 lb. (0.5 kg)
• Load Capacity: 40 lbs. (18 kg)
• Flow Rate: 90 gal. (340.69 L) per min. per sqft.
• Regulatory Compliance: 40 CFR 122.26, EPA, SPCC, NPDES
  

Documents

View Catalog Page:
Catalog Page 86, 87 - 4341, 4343

View Product Instructions:
4341, 4343 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 Rectangular, Cone Style Storm Sentinel® Catch Basin Insert, Adjustable, No Overflow (MPN: 4341-NO) at a lower price from an authorized distributor within 6 months of purchase, we will match the price and refund the difference.

Contact: info@tanksupplydirect.com