Morris Products 21801, Steel Snap-In Blanks 3/4", Use to Close Off Unused Openings in Boxes and Panel Boards

Steel Snap-In Blank – 3/4" Knockout Closure (Morris 21801)

This 3/4" steel snap-in blank is engineered to quickly and securely close unused knockout openings in metal electrical boxes, panelboards, and enclosures. Its snap-fit retention design installs easily without additional hardware, delivering a clean, professional finish while helping protect the enclosure against dust and debris.

Key Features

• Purpose: Closes unused 3/4" trade size knockout openings in electrical boxes and panels
• Material: Durable all-steel construction for long-lasting strength
• Design: Snap-in retention allows fast tool-free installation
• Finish: Metallic steel ideal for standard electrical enclosures
• Use Cases: Commercial, industrial, and residential electrical installations

Where It’s Used

• Junction and outlet boxes
• Panelboards and load centers
• Metal enclosures and cabinets
• Service equipment and control panels

How It Works

To install, simply align the blank with the unused knockout opening and press it into place until the retention tabs snap securely over the edge. The snap-in design eliminates the need for screws or additional fittings, making field installation fast and reliable.

Important Notes

• Trade Size Matching: Always confirm that the blank matches the knockout’s trade size (3/4"), not the measured hole diameter.
• Steel Preference: Steel blanks are often chosen for their strength and professional fit in commercial and industrial applications.