Middle Atlantic CUS RACKSHLF5SP Anod 17.5 - RSH4A5X-MC

Middle Atlantic RSH4A5X-MC 5U Fixed Rack Shelf

Overview

The Middle Atlantic RSH4A5X-MC is a 5U fixed rack shelf built to EIA standard 19-inch (482.6 mm) width — the universal rack format used in AV racks, security equipment enclosures, and IT infrastructure cabinets. At 446 mm deep and 222.2 mm tall, it provides a substantial horizontal platform for housing non-rackmount equipment, NVR appliances, access control servers, or audio gear that would otherwise sit loose inside a rack. If you're building a structured rack deployment and need a reliable, load-bearing surface for odd-form-factor equipment, the RSH4A5X-MC (often searched as RSH4A5X MC) gives you a dedicated, permanent shelf position without improvisation.

Constructed from steel with a black finish, this shelf integrates cleanly into Middle Atlantic rack enclosures and standard EIA 19-inch open-frame or enclosed racks from other manufacturers. The 5U rack capacity means it occupies five rack unit positions — plan your rack layout accordingly when mixing shelf positions with 1U and 2U rackmount gear.

Explore the full Middle Atlantic rack solutions catalog for compatible enclosures, panels, and accessories designed around the same EIA standard.

Key Features

• 5U rack height (222.2 mm): Five rack units of vertical space gives you room to stack or secure taller equipment that won't fit a shallower shelf profile. If your rack plan is tight, measure carefully — 5U is a meaningful commitment in a 12U or 16U enclosure.
• 19-inch EIA-standard width (482.6 mm): Fits any standard 19-inch open-frame or enclosed rack cabinet without modification. This is the universal mounting width across AV, security, telecom, and IT infrastructure — no adapter rails needed.
• 446 mm shelf depth: At roughly 17.5 inches deep, this shelf accommodates mid-depth equipment — typical NVRs, unmanaged switches, power supplies, or AV processors all fall within this footprint. Verify your equipment's depth before ordering if you're running anything deeper than 16 inches.
• Steel construction: Steel provides a rigid load-bearing surface suited to commercial rack environments where vibration, cable management loads, and equipment weight are real factors. Contrast this with lighter polymer shelves that flex under heavier components.
• Black powder-coat finish: Matches standard black rack enclosures and equipment faceplates. Keeps the rack interior visually consistent in customer-facing installations or finished AV/security control rooms.
• Single-unit pack (1 pc): Sold individually — order the quantity you need per rack position. No bundle pricing required if you only need to fill one shelf slot in a mixed-use rack.

Integration & Compatibility

The RSH4A5X-MC is designed around the EIA 310-D 19-inch rack standard, making it compatible with Middle Atlantic's own line of rack enclosures as well as third-party racks from manufacturers who follow the same standard. When pairing with a network video recorder or similar appliance, verify the NVR's depth against the 446 mm shelf dimension — most 1U and 2U NVR appliances from major security brands fall well within this limit.

For rack planning in security and AV environments, this shelf pairs well with structured rack accessories including cable management panels, blanking plates, and ventilated top panels. Consult your rack planning guide when designing a multi-device enclosure to allocate U-space correctly across shelf, blanking, and active equipment positions.

Frequently Asked Questions

Q: What is the exact shelf depth of the RSH4A5X-MC?

A: The RSH4A5X-MC has a shelf depth of 446 mm (approximately 17.6 inches), suitable for mid-depth rack-mount and non-rack equipment.

Q: How many rack units does the RSH4A5X-MC occupy?

A: It occupies 5U (five rack units), equivalent to 222.2 mm of vertical rack space. Plan your rack layout carefully as 5U is a significant allocation in smaller enclosures.

Q: Will the RSH4A5X-MC fit in a standard 19-inch rack from another manufacturer?

A: Yes. The shelf is built to EIA 310-D 19-inch standard width (482.6 mm), so it mounts in any compliant 19-inch open-frame or enclosed rack cabinet regardless of brand.

Q: What is the shelf made of?

A: The RSH4A5X-MC is constructed from steel with a black finish, providing a rigid, load-bearing surface appropriate for commercial rack environments.

Q: How many shelves come in the package?

A: One (1) shelf is included per pack. Order multiple units if you need more than one shelf position in your rack.

Q: What types of equipment is the RSH4A5X-MC intended to support?

A: It is designed to support non-rack-mount equipment that requires a flat shelf surface inside a standard rack enclosure — such as NVR appliances, AV processors, access control hardware, or power conditioning units that do not have their own rack ears.

Marty Allison

When I spec rack infrastructure for security and AV installations, the shelf depth is always the first number I check — and the RSH4A5X-MC's 446 mm depth covers the majority of non-rackmount appliances I see in the field without forcing equipment to overhang the front rail. At 5U, this shelf gives you real vertical clearance for taller boxes that don't have rack ears.

Technical Highlights:

• 446 mm depth: Covers mid-depth equipment up to roughly 17.5 inches — typical for standalone NVR boxes, unmanaged PoE switches, and access control servers that ship without rack ears. Anything deeper than 18 inches will overhang; measure first.
• 482.6 mm EIA-standard width: Drops into any 19-inch compliant rack without adapter rails or custom hardware — a time saver on multi-enclosure deployments where you're pulling from mixed-brand rack inventory.
• Steel construction: Handles the weight of commercial-grade appliances without flex. Polymer shelves can sag under a loaded NVR with drives installed; steel doesn't.

Deployment Considerations:

• At 5U, the RSH4A5X-MC is a meaningful chunk of vertical space — in a 12U rack, that's nearly half the enclosure. Do your U-space math before committing a shelf position in a dense deployment.
• No load rating is published in the available evidence — if you're placing a heavy appliance (multi-drive NVR, UPS, or similar), verify the rated capacity with Middle Atlantic directly before finalizing the install.

This shelf is a practical fit for security control room racks and AV equipment enclosures where you need a permanent, steel-reinforced platform for appliances that don't arrive rack-ready out of the box.