Tripp Lite 42U SmartRack 4-Post Mid-Depth Open Frame Rack, Expansion Version, no sides, doors or roof

Overview

The Tripp Lite SR42BMDEXPNDNR3 is a four-post open frame rack designed to hold standard 19-inch servers, switches, and other network equipment. It offers 42U of rack height with a usable depth of 36 inches and a width of 24 inches, making it suitable for mid-depth servers and common data center layouts. This expansion model comes without sides, doors, or a roof, allowing unrestricted airflow and easy access to equipment from all directions.

Built with a sturdy steel frame, the rack supports up to 3000 lbs whether stationary or rolled, accommodating dense hardware setups. Heavy-duty casters and leveling feet make it easy to move and stabilize the rack in various environments, from data centers to network closets and labs.

Key features

• Open frame design provides full access for installation, cabling, and maintenance without obstruction.
• Pre-installed heavy-duty casters enable smooth movement through standard doorways by a single person.
• Adjustable leveling feet ensure stable placement on uneven floors once positioned.
• Front and rear mounting rails slide forward or backward with a printed depth index for precise hardware alignment.
• Includes 50 M6 cage nuts and screws for immediate equipment mounting right out of the box.
• Integrated grounding points simplify bonding to facility ground for enhanced safety compliance.
• Tool-less accessory rails accept cable managers, vertical power strips, and airflow panels without additional hardware.
• Supports heavy loads up to 3000 lbs, suitable for dense server and network configurations.
• Backed by a 5-year limited warranty, reflecting Tripp Lite’s commitment to quality and reliability.

Key specs

• Rack height: 42U
• Usable depth: 36 inches
• Width: 24 inches
• Load capacity: 3000 lbs (stationary and rolling)
• Mounting rails: Front and rear, adjustable with depth index
• Included hardware: 50 M6 cage nuts and 50 M6 screws
• Frame material: Steel
• Casters: Heavy-duty, pre-installed
• Warranty: 5-year limited

Connectivity and compatibility

This rack is compatible with standard 19-inch rack-mount equipment commonly used in data centers, server rooms, and network closets. Its 42U height and 36-inch depth accommodate most mid-depth servers and networking devices, while the 24-inch width aligns with typical data center floor tiles and cable trays. The open frame design supports easy integration with existing aisle containment systems or lab setups where quick hardware access is essential.

Installation and setup

Assembly and installation are straightforward thanks to the pre-installed casters and adjustable leveling feet. The sliding mounting rails with printed depth indexes help align equipment precisely according to manufacturer specifications. Tool-less accessory rails allow quick attachment of cable management and power accessories without extra tools, speeding up setup and keeping the rack organized.

Ideal uses and environments

This rack fits well in data center rows with aisle containment, network closets that do not require doors, and lab environments where rapid hardware swaps are common. Its open design and robust load capacity make it a strong choice for IT teams that prioritize easy access, airflow, and flexible equipment configurations. The rack’s mobility and stability features also support dynamic workspaces where equipment may need to be relocated frequently.