Ag Manufacturing 416 Knockout Seal 2.5 Inches Steel

Product Description

The AG MANUFACTURING 416 is a 3-piece screw bar knockout seal designed to close and secure unused knockout openings in electrical enclosures, panels, and junction boxes. Constructed from steel, it provides a durable, code-appropriate closure that resists tampering and mechanical damage. The screw bar design allows for secure installation without special tooling, making it a reliable solution for electricians working on panel terminations and enclosure sealing tasks. Sized at 2.5 inches, it fits standard knockout openings of that diameter found in a wide range of electrical equipment.

This knockout seal is suited for residential and commercial electrical installations where unused conduit knockouts must be closed per NEC requirements. It is commonly installed during new construction, renovation, and service calls whenever a knockout is opened but a conduit entry is not used. The 3-piece screw bar configuration allows the seal to clamp securely from the front of the panel or enclosure wall, eliminating the need for access from the back side of the panel.

Key Features

• 3-piece screw bar design allows single-sided installation without rear access
• Steel construction provides durability and resistance to mechanical stress
• 2.5-inch size fits standard knockout openings of that diameter
• Secures unused knockouts in compliance with NEC enclosure closure requirements
• No special tooling required for installation

Compatibility

Designed as an OEM-style replacement and standard fitment for 2.5-inch knockout openings in residential and commercial electrical panels, junction boxes, and enclosures.

Installation Notes

Installation is performed by a licensed electrician. De-energize the panel or enclosure and follow applicable NFPA 70 (NEC) lockout/tagout procedures before beginning work. Insert the seal into the knockout opening and tighten the screw bar to clamp the assembly securely against the enclosure wall. Do not overtighten to the point of deforming the enclosure material.

Technical Specifications

• Type: 3-Piece Screw Bar
• Size: 2.5 inches
• Material: Steel

Standard Information

• Brand: AG MANUFACTURING
• Manufacturer Part Number: 416