Southwire 150 Snap-in Knockout Seal Blank Steel 1/2 Inch

Product Description

The SOUTHWIRE 150 is a snap-in knockout seal blank used to close unused 1/2-inch knockout openings in electrical enclosures, junction boxes, and panel boxes. It installs without tools by pressing firmly into the knockout hole until it seats, providing a secure closure that helps maintain the integrity of the enclosure. Available in steel or 6/6 nylon construction, this blank is a standard item on commercial and residential electrical jobs wherever open knockouts need to be sealed per code requirements.

This snap-in blank is suited for use in new construction and retrofit applications. Electricians install these blanks in outlet boxes, junction boxes, loadcenters, and other metallic or non-metallic electrical enclosures to seal unused 1/2-inch knockouts. The tool-free snap-in design makes installation fast during rough-in and trim-out phases on both residential and light commercial projects.

Key Features

• Snap-in design installs without tools for fast knockout closure
• Fits standard 1/2-inch knockout openings in electrical enclosures
• Available in steel or 6/6 nylon material construction
• Helps maintain enclosure integrity for NEC compliance
• One year limited warranty

Compatibility

Designed as an OEM-style replacement and standard-fit snap-in blank for 1/2-inch knockout openings in residential and commercial electrical enclosures, junction boxes, and panel boxes.

Installation Notes

Installation is performed by licensed electricians or qualified electrical workers. De-energize the enclosure before working inside any electrical box or panel. Press the blank firmly into the knockout opening until it snaps fully into place and seats flush. Follow applicable NEC requirements for closing unused openings in electrical enclosures.

Technical Specifications

• Knockout Size: 1/2 inch
• Material: Steel or 6/6 Nylon
• Package Length: 17.5 inches
• Package Height: 4.0 inches
• Package Width: 10.5 inches
• Package Weight: 11.45 pounds
• Warranty: One Year Limited

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 150