Bridgeport Fittings 1693 Steel Knockout Hole Plug 1 Inch

Product Description

The BRIDGEPORT FITTINGS 1693 is a 1-inch steel knockout hole plug designed to seal unused knockouts in electrical boxes, panels, and enclosures. Once a knockout is removed and the opening is no longer needed, this plug closes the hole to maintain the integrity of the enclosure. It installs without tools — press or hammer it into place from the outside of the box. Electricians and maintenance technicians use this plug to keep enclosures code-compliant by preventing debris, pests, and moisture from entering through open knockouts. The plug is rated for both indoor and outdoor use.

This plug is suited for residential and commercial electrical work wherever standard 1-inch knockouts are present. Typical applications include loadcenters, junction boxes, pull boxes, and other metal or non-metallic enclosures where unused knockouts need to be closed off. It is a staple item in any electrician's service bag for quick, clean closure of spare openings during rough-in and finish work.

Key Features

• Seals unused 1-inch knockout holes in electrical enclosures
• Steel construction for durable, long-lasting closure
• Tool-free installation — press or hammer in from outside the box
• Rated for indoor and outdoor applications
• Helps maintain enclosure integrity and NEC code compliance

Compatibility

Designed as an OEM-style replacement or supplemental fitting for standard 1-inch knockout openings in electrical boxes and enclosures.

Installation Notes

Installation is performed by a licensed electrician or qualified maintenance technician. De-energize the circuit and follow NFPA 70 (NEC) lockout/tagout procedures before working inside any electrical enclosure. Align the plug over the knockout opening and press or lightly hammer it flush from the exterior side of the box. Do not over-strike, as deforming the plug may compromise the seal or the enclosure wall.

Technical Specifications

• Knockout Size: 1 inch
• Material: Steel
• Application: Indoor and Outdoor

Standard Information

• Brand: BRIDGEPORT FITTINGS
• Manufacturer Part Number: 1693