Rack shelf Stalflex E-RSF19-1U-300G 19" 1U 300mm Gray

Stalflex E-RSF19-1U-300G is a 19" rack shelf with a 1U height and 300 mm depth finished in gray. It is intended for permanent mounting inside standard 19-inch server and network racks to support non-rackmount equipment, small network devices, tools and accessories. The shelf offers a stable horizontal platform that complements cabinets in data centres, telecom rooms and IT closets where compact fixed shelving is required.

Advantages

The shelf provides a low-profile 1U mounting option that conserves vertical rack space while delivering dependable support for devices that do not have rack ears. Its 300 mm depth accommodates compact switches, external drives and peripheral equipment without protruding into the cabinet aisle. The gray finish resists visible wear and integrates visually with common rack enclosures. The rigid construction ensures stable load distribution and reduces the risk of equipment shifting during maintenance.

Suitable for

• Mounting compact non-rackmount network switches and routers
• Placing external hard drives, UPS units (compact), and power strips
• Storing tools, cables and small accessories inside server cabinets
• Temporary placement of laptops or test equipment during maintenance

Key specifications

• Form factor: 19-inch rack shelf
• Height: 1U (approx. 44.45 mm usable rack height)
• Depth: 300 mm
• Finish: gray powder-coated surface
• Mounting type: fixed front and rear 19" rack mounting
• Load support: designed for compact, non-rackmount equipment and accessories (see cabinet load limits)

How to use

Install the shelf into a standard 19" rack by aligning the mounting holes at the front and rear of the shelf with the rack’s vertical mounting rails and secure it using appropriate rack screws and cage nuts for your cabinet. Position equipment centrally on the shelf to ensure even load distribution and avoid overhanging which may stress the mounting points. Follow your cabinet manufacturer’s instructions regarding supported U-spaces and maximum allowed load per unit to maintain rack stability.

Usage recommendations

Use this shelf for items that do not require active ventilation from the rack or that have their own cooling; avoid placing heat-generating equipment in confined spaces without adequate airflow. Verify the cabinet’s weight capacity and use proper fasteners when installing to ensure secure mounting. For cable management and airflow optimization, route cables along the rack verticals and leave a small clearance at the rear for ventilation.