Hubbell CUP2 3/4 Inch Recessed Head Plug

Product Description

The HUBBELL CUP2 is a 3/4 inch recessed head plug used to seal threaded conduit openings and knockout entries in electrical enclosures, boxes, and panels. The recessed head profile sits flush or below the surface of the entry point, reducing snag hazards and providing a clean, finished appearance. Electricians and electrical contractors install this plug during rough-in and finish work to close unused conduit hubs or knockouts, maintaining the integrity of the enclosure and complying with NEC requirements for closing unused openings.

The HUBBELL CUP2 is suited for residential and commercial electrical installations wherever 3/4 inch threaded conduit entries or knockouts need to be closed off. Common applications include load centers, junction boxes, pull boxes, and distribution panels. The plug is installed when a conduit entry is no longer in use or was never routed, keeping the enclosure free of debris and maintaining appropriate environmental and safety ratings for the box.

Key Features

• 3/4 inch recessed head design for flush or sub-flush installation
• Closes unused threaded conduit openings and knockouts
• Recessed profile reduces snag risk and provides a clean finish
• Suitable for use in panels, junction boxes, and pull boxes
• Supports NEC compliance for closing unused enclosure openings

Compatibility

Designed as an OEM-style replacement or standard-use plug for 3/4 inch threaded conduit hubs and knockout entries in residential and commercial electrical enclosures.

Installation Notes

A licensed electrician should install this plug in accordance with applicable NEC requirements. De-energize the panel or enclosure and verify the absence of voltage before opening any electrical box for service. Standard hand tools are sufficient for installation. Ensure the plug is fully seated and secure to maintain enclosure integrity and code compliance.

Technical Specifications

• Thread Size: 3/4 inch
• Head Type: Recessed

Standard Information

• Brand: HUBBELL
• Manufacturer Part Number: CUP2