Description
Overview:
The Polished End Cap for 1" square tube (25.4 x 25.4 mm) is a push-fit insert that closes and finishes open box-section ends. Made from durable material with a smooth, polished top, it improves appearance while protecting users and nearby surfaces from sharp tube edges. A ribbed body grips the tube wall for a reliable hold without adhesives or screws. It suits square tube with 25.4 x 25.4 mm outside dimensions (1 x 1 inch) and typical wall thicknesses from 1.0 to 2.5 mm (approximately 20-12 gauge). Commonly used on office furniture, frames, workstations, and light workshop equipment, it provides a tidy look and helps keep dirt and moisture out of the section. Manufacturer Part Number (MPN): 921 3109.
Key Features:
- Sized for 25.4 x 25.4 mm square tube (1 x 1 inch) for a precise, tidy fit
- Works with tube wall thickness 1.0-2.5 mm (approx. 20-12 gauge)
- Ribbed insert design resists pull-out and vibration for secure retention
- Polished top for a clean, professional finish that is easy to wipe down
- Push-fit installation; no drilling or fasteners required in most cases
- Helps seal tube ends to reduce ingress of dirt and debris
- Protects users from sharp edges and reduces snag points on frames
- Supports furniture stability by distributing contact at the tube end
- Neat finishing detail suited to visible applications and customer-facing areas
- Durable construction for long service life under routine use
Typical Applications:
Finishing and protecting the ends of square tube on office desks and chairs, shopfitting displays, shelving units, machine guards, workbenches, trolleys, frames, and handrails. Useful for new builds and refurbishments where a clean appearance and safe, closed tube end are required.
Also known as:
Square tube insert, box section end, push-in end plug, finishing cap, blanking plug, square ferrule, furniture end, tube closer, square bung, square end protector.
Product Specifications
| L&S Part No. | 921 3109 |
|---|---|
| Unit of Sale | 1 |
| Size | Size: 25.4 x 25.4mm |
| Key Features | - Fits 25.4 x 25.4 mm square tube - Compatible with 1.0-2.5 mm wall thickness - Ribbed design ensures secure retention - Polished top for easy cleaning - Push-fit installation, no fasteners needed |


