Series 5000 Server Cabinet: Complete Buyer's Guide (42U, 44U, 48U)
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The Electron Metal Series 5000 server cabinet is a tool-less, fully welded 14-gauge steel enclosure available in 42U, 44U, and 48U heights with 42″ or 48″ depths. Rated for 3,000 lbs static load and EIA-310 compliant 19″ mounting, the line includes 12 SKUs across server and network configurations — all shipped fully assembled with a 10-year structural warranty.
Procurement teams evaluating data center infrastructure face a familiar tension: selecting a cabinet that meets current density requirements without overbuilding for capacity that may never materialize. The Series 5000 addresses this through a modular, scalable design philosophy — one frame architecture that spans three rack unit heights and two depth classes, with a tool-less accessory system that lets facilities teams reconfigure without downtime or specialized labor.
This guide provides the specification data, SKU-by-SKU breakdowns, and configuration logic that procurement professionals and facilities engineers need to specify the right Series 5000 cabinet for their deployment.
Understanding the Series 5000 Cabinet Architecture
The Series 5000 represents Electron Metal's scalable enclosure platform, engineered around a single principle: infrastructure should adapt to evolving IT requirements without requiring cabinet replacement. Where many enclosure lines treat each rack unit height as a separate product family, the Series 5000 uses a unified frame design across all configurations.
Tool-less accessory system is the defining feature that distinguishes the Series 5000 from conventional server cabinets. This system allows vertically oriented accessories — including vertical mounting rails, vertical cable management, and universal accessory channels — to be installed, repositioned, or removed without tools or measuring devices. For facilities teams managing hundreds of cabinets, this translates directly to reduced labor hours during initial deployment and ongoing reconfiguration.
The engineering foundation starts with a fully welded frame constructed from 14-gauge cold rolled steel. This is not a bolted-together assembly — the welded construction eliminates the joint loosening, vibration fatigue, and structural drift that compromise bolted frames over time. The result is a 3,000 lb static load capacity backed by a 10-year structural warranty.
Definition — Rack Unit (RU or U): A rack unit equals 1.75 inches (44.45 mm) of vertical mounting space, standardized under EIA-310. A 42U cabinet provides 73.5 inches of usable mounting height; a 48U cabinet provides 84 inches. Selecting the right RU count depends on current equipment density, projected growth over the cabinet's service life, and vertical airflow requirements.
Two Product Lines, One Engineering Platform: Server vs. Network
The Series 5000 encompasses two distinct product lines built on the same structural platform — the Server Cabinet (CB5KSV) and the Network Cabinet with High-Density Cable Management (CB5KNH). Both share the 14-gauge welded frame, tool-less accessory system, 3,000 lb load rating, and 10-year warranty. The differences lie in width and cable management optimization.
The Server Cabinet (CB5KSV) uses a 23.625″ overall width (600 mm) with 21″ usable internal width. This is the standard-width configuration optimized for 19″ EIA-310 compliant equipment mounting with adequate side clearance for power cabling and airflow.
The Network Cabinet with High-Density Cable Management (CB5KNH) expands to a 29.625″ overall width (752 mm) with 27″ usable internal width. The additional 6 inches of internal width accommodates high-density patch panel environments where structured cabling volumes demand dedicated cable management space alongside the 19″ mounting rails.
Definition — EIA-310: The Electronic Industries Alliance standard EIA-310 (also referenced as EIA/ECA-310-E) defines the physical dimensions for 19-inch rack-mounted equipment. Compliance ensures universal equipment compatibility across vendors. All Series 5000 cabinets meet EIA-310 mounting rail specifications.
Series 5000: Server vs. Network Cabinet Comparison
Complete SKU Reference: All 12 Series 5000 Configurations
Each Series 5000 SKU follows a systematic part numbering convention that encodes the product line, width class, rack unit height, and depth. Understanding this convention simplifies specification and ordering across large-scale deployments where multiple configurations may be required within the same facility.
Part number structure: CB5K[Line]-[Width][RU][Depth]. For example, CB5KSV-214442 decodes as Series 5000 (CB5K), Server variant (SV), 21″ usable width (21), 44 rack units (44), 42″ depth (42).
Server Cabinet SKUs (CB5KSV Series)
Series 5000 Server Cabinet — All 6 SKUs with Dimensions
Part Number
Rack Units
Overall Dimensions (W × H × D)
Metric Dimensions
Usable Dimensions (W × RU × D)
CB5KSV-214242
42U
23.625″ × 77″ × 42″
600 × 1955.8 × 1066.8 mm
21″ × 42U × 40.75″
CB5KSV-214248
42U
23.625″ × 77″ × 48″
600 × 1955.8 × 1219.2 mm
21″ × 42U × 46.75″
CB5KSV-214442
44U
23.625″ × 80.5″ × 42″
600 × 2044.7 × 1066.8 mm
21″ × 44U × 40.75″
CB5KSV-214448
44U
23.625″ × 80.5″ × 48″
600 × 2044.7 × 1219.2 mm
21″ × 44U × 46.75″
CB5KSV-214842
48U
23.625″ × 87.5″ × 42″
600 × 2222.5 × 1066.8 mm
21″ × 48U × 40.75″
CB5KSV-214848
48U
23.625″ × 87.5″ × 48″
600 × 2222.5 × 1219.2 mm
21″ × 48U × 46.75″
Network Cabinet HD SKUs (CB5KNH Series)
Series 5000 Network Cabinet HD — All 6 SKUs with Dimensions
Part Number
Rack Units
Overall Dimensions (W × H × D)
Metric Dimensions
Usable Dimensions (W × RU × D)
CB5KNH-274242
42U
29.625″ × 77″ × 42″
752 × 1955.8 × 1066.8 mm
27″ × 42U × 40.75″
CB5KNH-274248
42U
29.625″ × 77″ × 48″
752 × 1955.8 × 1219.2 mm
27″ × 42U × 46.75″
CB5KNH-274442
44U
29.625″ × 80.5″ × 42″
752 × 2044.7 × 1066.8 mm
27″ × 44U × 40.75″
CB5KNH-274448
44U
29.625″ × 80.5″ × 48″
752 × 2044.7 × 1219.2 mm
27″ × 44U × 46.75″
CB5KNH-274842
48U
29.625″ × 87.5″ × 42″
752 × 2222.5 × 1066.8 mm
27″ × 48U × 40.75″
CB5KNH-274848
48U
29.625″ × 87.5″ × 48″
752 × 2222.5 × 1219.2 mm
27″ × 48U × 46.75″
How to Select the Right Rack Unit Height: 42U vs. 44U vs. 48U
Rack unit height is the first specification decision in cabinet procurement, and it has downstream effects on floor loading, cooling architecture, and long-term scalability. The choice is not simply about fitting current equipment — it is about matching the cabinet's service life (typically 10–15 years in data center environments) to realistic density growth projections.
42U (77″ overall height) suits deployments where ceiling clearance is constrained, retrofit installations into existing rooms, or standardized environments where equipment density is well-understood and stable. At 77 inches, the 42U configuration fits comfortably under standard 9-foot raised floor environments with overhead cable trays.
44U (80.5″ overall height) is the Series 5000 standard configuration and the most commonly specified height across data center and telecom environments. The additional 2U over 42U provides meaningful expansion headroom — enough for a top-of-rack switch pair or monitoring equipment — without substantially changing floor loading calculations or aisle containment clearances.
48U (87.5″ overall height) targets high-density deployments, colocation environments billing by rack unit, and facilities designed for maximum vertical utilization. At 87.5 inches overall, ceiling height and overhead infrastructure clearances must be verified during site planning. The 48U option delivers 14% more usable mounting space than 42U within the same floor tile footprint.
Height Selection Decision Matrix
Selection Criteria
42U
44U
48U
Ceiling Height Required
8′ minimum
8.5′ recommended
9′+ recommended
Growth Headroom
Limited
Moderate (2U buffer)
Maximum
Typical Application
Retrofit, constrained spaces
General data center, telecom
Colocation, high-density
Relative Floor Density
Baseline
+4.8%
+14.3%
Aisle Containment Fit
All standard systems
All standard systems
Verify clearances
Why Depth Matters: 42″ vs. 48″ and the Equipment Compatibility Equation
Cabinet depth determines which servers, switches, and storage arrays physically fit, how much rear clearance exists for cable management, and whether airflow patterns support the thermal envelope of installed equipment. The Series 5000 offers two depth options — 42″ and 48″ — with usable depths of 40.75″ and 46.75″ respectively.
42″ depth (40.75″ usable) accommodates the majority of 1U and 2U rack-mount servers, standard network switches, and patch panels. For environments running equipment from vendors whose chassis depths typically fall in the 28″–34″ range, the 42″ depth provides adequate rear clearance for structured cabling and power connections.
48″ depth (46.75″ usable) is the specification for deep-chassis servers (GPU compute nodes, high-density storage arrays), environments requiring extensive rear cable management, or deployments planning for next-generation equipment that trends longer. The additional 6 inches of usable depth often makes the difference between clean cable management and forced cable bends that restrict airflow.
The engineering principle at work: Usable Depth = Equipment Clearance + Cable Bend Radius + Airflow Buffer. When equipment chassis depth plus minimum cable bend radius approaches the usable depth, airflow restriction begins. Procurement teams should verify the deepest planned equipment chassis against usable depth and maintain a minimum 4″ rear clearance for structured cabling.
Door, Panel, and Thermal Configuration Options
The Series 5000 standard configuration ships with a perforated front door and split rear doors, both with lockable swing handles. But the platform supports a full range of door and side panel materials that let procurement teams match enclosure configuration to specific thermal, security, and access requirements.
Door Options
Perforated doors are the standard for data center environments where front-to-back airflow is the primary cooling mechanism. Perforation patterns typically achieve 64–78% open area, allowing cold aisle air to flow freely through equipment intake. The Series 5000 ships standard with perforated front doors.
Split rear doors (standard configuration) divide the rear access into two panels that swing independently. This design is critical in row-based deployments where full-swing single doors would collide with adjacent cabinets or obstruct aisle space. Split doors also reduce the required service clearance behind the cabinet.
Solid doors provide maximum physical security and acoustic dampening. Specify solid doors for environments where equipment noise isolation matters (office-adjacent server rooms, broadcast control rooms) or where physical security takes precedence over passive airflow — typically paired with active cooling solutions like fan-assisted exhaust.
Acrylic doors allow visual equipment monitoring without opening the enclosure. Common in demo environments, network operations centers, and facilities where visual status indication (LED patterns, display readouts) must be observable without physical access.
Custom doors are available for applications requiring non-standard configurations — specific perforation patterns, integrated locking systems, branded panels, or dimensional modifications.
Side Panel Options
Side panels ship standard with quick-release locks for tool-free removal during maintenance. Available configurations include solid, perforated, and custom panels. Perforated side panels can improve cross-rack airflow in configurations where side-to-side cooling supplements primary front-to-back patterns.
Top Cover and Thermal Management
The Series 5000 top cover includes multiple 4″ × 12″ rectangular cable entry cutouts with brush grommets, plus four fan cutouts and a hot air chimney provision. This integrated thermal architecture supports passive exhaust through the chimney pathway and active exhaust through optional ceiling-mounted fans — without field modification to the cabinet structure.
What Ships Standard: Inclusions and Accessories
Every Series 5000 cabinet ships fully assembled with a defined set of standard inclusions. Understanding what arrives in the box versus what requires separate specification prevents procurement gaps that delay deployment.
Standard inclusions across all 12 SKUs:
One fully welded cabinet frame with two pairs of 19″ adjustable mounting rails featuring square holes and RU markings for precise equipment alignment. One pair of high-density cable management rails pre-installed on the front mounting rails. 50 cage nuts for immediate equipment mounting. Perforated front door and split rear doors with lockable swing handles. One universal accessory channel for PDU or cable management mounting. Removable top cover with 4″ × 12″ brush-grommet cable entry cutouts and fan cutouts. Additional top cable entry points. Leveling feet and casters for stability and mobility. Two side panels with quick-release locks.
Optional enhancements available through Electron Metal's accessory ecosystem include power distribution units, additional vertical cable management, fan assemblies, shelves and drawers, blanking panels, and grounding kits. The cabinet accessories catalog and cable management accessories provide the full range of compatible components.
Specification and Ordering Guidance for Procurement Teams
Specifying the Series 5000 for a procurement document, RFP response, or Division 27 technical specification requires precise part numbers and dimensional data. The systematic SKU structure simplifies this process across multi-cabinet deployments.
For Division 27 specifications: Reference the Series 5000 by part number with the following minimum specification language — "Server/Network cabinet shall be fully welded 14-gauge cold rolled steel construction, EIA-310 compliant 19″ mounting, minimum 3,000 lb static load capacity, with tool-less vertical accessory system. Manufacturer: Electron Metal, Series 5000, Part No. [specific SKU]." Electron Metal provides a Division 27 Specification Package Generator for streamlined specification document creation.
For multi-cabinet deployments: The tool-less accessory system means that vertical cable management, PDU channels, and mounting rail positions can be standardized across an initial deployment and adjusted cabinet-by-cabinet as equipment loads evolve. This reduces the need to specify unique accessory configurations for each cabinet at procurement time.
Lead time and delivery: Series 5000 cabinets ship fully assembled. Contact sales@electronmetal.ca for current lead times, volume pricing, and custom configuration consultations. Electron Metal's staging and logistics services can pre-configure cabinets with specified accessories, PDUs, and cable management before delivery — reducing on-site labor and accelerating deployment timelines.
What is the load capacity of the Series 5000 server cabinet?
The Series 5000 supports a 3,000 lb static load capacity across all 12 SKUs. This rating applies to the fully welded 14-gauge cold rolled steel frame and covers the combined weight of all mounted equipment, cable, and accessories. The load capacity is consistent whether selecting the 42U, 44U, or 48U height configuration.
What is the difference between the Series 5000 Server Cabinet and the Network Cabinet?
The primary difference is width. The Server Cabinet (CB5KSV) has a 23.625″ overall width with 21″ usable internal width, optimized for standard server deployments. The Network Cabinet HD (CB5KNH) expands to 29.625″ overall with 27″ usable width, providing additional space for high-density structured cabling and patch panel environments. Both share the same frame construction, load rating, and tool-less accessory system.
Does the Series 5000 comply with EIA-310 rack mounting standards?
All Series 5000 cabinets are 19″ EIA-310 compliant. Mounting rails feature square holes with RU markings for precise equipment alignment. The cabinet ships with 50 cage nuts and two pairs of adjustable mounting rails, ensuring compatibility with standard rack-mount equipment from all major IT vendors.
Can door and side panel configurations be changed after initial purchase?
Door and side panel configurations are specified at order time, with options including solid, perforated, acrylic, split, and custom designs. Replacement doors and panels can be ordered separately through Electron Metal's accessories program, allowing facilities teams to reconfigure thermal or security characteristics as operational requirements evolve.
What warranty covers the Series 5000 cabinet?
Electron Metal provides a 10-year structural warranty on all Series 5000 cabinets. This warranty covers the fully welded frame, structural components, and manufacturing defects. The warranty reflects the engineering confidence behind welded 14-gauge steel construction — enclosures designed for a service life that spans multiple equipment refresh cycles.
How does the tool-less accessory system work?
The Series 5000 tool-less system uses an integrated channel design that allows vertically oriented accessories — mounting rails, vertical cable management, universal accessory channels, and PDU brackets — to be installed, repositioned, or removed without tools or measuring devices. Accessories slide into position and lock mechanically, enabling reconfiguration during live operations without disturbing mounted equipment.
Engineering Procurement Confidence Through Specification Clarity
Cabinet selection is an infrastructure commitment measured in decades, not quarters. The Series 5000 platform — with its unified frame architecture across 12 SKUs, tool-less adaptability, and 3,000 lb load foundation — provides procurement teams the specification depth needed to make that commitment with documented confidence.
The right cabinet is not the one with the longest feature list. It is the one whose specifications align precisely with deployment requirements, whose construction withstands the operational realities of mission-critical environments, and whose manufacturer stands behind the engineering with a warranty that matches the expected service life.
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