Middle Atlantic 5SP23in. in. DP VTR SLDING SHLF - SS5-23VTR

Middle Atlantic SS5-23VTR 5RU Deep Pull-Out Rack Shelf

Overview

The Middle Atlantic SS5-23VTR is a heavy-duty sliding rack shelf engineered for 19-inch standard enclosures where fixed shelves fall short — specifically when you need to pull rack-mounted gear forward for servicing without disconnecting cables. At 5 rack units tall and 23 inches deep, it accommodates tower-footprint equipment that shorter shelves simply cannot support: rackmounted UPS units, VTR chassis, NVR appliances, video servers, and large AV components. If you're building out a Middle Atlantic rack system or retrofitting an existing enclosure with slide-access for heavy gear, the SS5-23VTR is the shelf to spec.

This is a commercial-grade component sourced for integrators who need a reliable sliding platform that won't develop play or sag under load over time. The black powder-coat finish blends cleanly into any rack interior, and the four mounting points distribute load across the rack rails rather than concentrating stress on two points — relevant when you're at or near the 75 lb capacity.

Key Features

• 75 lb (34 kg) Weight Capacity: Rated to support full-sized tower UPS units, multi-drive NVR chassis, and dense AV processors without deflection. Most sliding shelves in this form factor cap at 44–55 lbs — the 75 lb rating on the SS5-23VTR gives you headroom for heavier hardware without having to upspec the entire rack build.
• 23-Inch (58.4 cm) Depth: Purpose-sized for VTR and tower-format equipment that overhangs standard 16–18 inch shelves. At 23 inches, it fully supports the footprint of most rackmounted NVR appliances and mid-tower chassis, eliminating the overhang risk that causes tipping on shorter platforms.
• 5 RU Height (10.46 in / 26.6 cm): Accommodates taller equipment — a 4U NVR or UPS chassis — with physical clearance above and below for cabling and airflow. If your gear is 3U or less, a smaller shelf unit may recover usable rack space; the 5RU profile is the right call when equipment height or ventilation requirements demand it.
• 19-Inch Standard Width (48.3 cm): Fits all EIA/IEC standard 19-inch rack enclosures without modification. The SS5-23VTR drops into any compliant rack enclosure or open-frame rack — no custom brackets, no adapters.
• 4-Point Mounting: Four rack-rail attachment points rather than the two-point front-only mount common on lighter shelves. With 75 lbs of equipment on a 23-inch cantilever, four-point attachment is the spec that prevents the shelf from racking or pulling away from the rail under dynamic load — particularly relevant in mobile or transportation rack installations.
• Sliding Access: The pull-out mechanism is the functional core of this shelf. It lets you access rear panel connections, cable management, and ventilation on rack-mounted gear without lifting or disconnecting equipment — a real time saver during commissioning and a maintenance requirement for any gear that gets touched regularly (recorders, servers, UPS batteries).
• Black Powder-Coat Finish: Matches standard rack interior finishes across Middle Atlantic and most third-party enclosures. Durable against abrasion from repeated slide cycles and tool contact during installation.

Integration & Compatibility

The SS5-23VTR is designed for standard 19-inch rack rail spacing per EIA-310. It integrates directly into Middle Atlantic rack enclosures and open-frame racks, and is broadly compatible with third-party 19-inch enclosures that conform to the standard. For security and AV integrators building out rack accessories packages, this shelf pairs with rack-mount PDUs, patch panels, and cable management hardware without clearance conflicts — the 5RU height gives physical separation between the shelf platform and adjacent rack units above and below.

When specifying this shelf for an NVR or surveillance recorder installation, verify that your enclosure depth accommodates both the 23-inch shelf and the rear cable bend radius for the recorder's connections. Shallow rack enclosures (less than 28 inches interior depth) may require rear door removal or cable routing modifications. For a full rack mounting and capacity planning guide, review the available resources before finalizing your enclosure selection.

The SS5-23VTR (often searched as SS5 23VTR) ships at 17.5 lbs (7.9 kg), so account for packaging dimensions when calculating freight for larger orders.

Frequently Asked Questions

Q: What is the maximum weight the SS5-23VTR can support?

A: The SS5-23VTR is rated for a maximum of 75 lbs (34 kg). This covers most tower-format UPS units, mid-tower NVR chassis, and dense AV processors typically installed in security and AV rack builds.

Q: What rack unit height does the SS5-23VTR occupy?

A: The SS5-23VTR occupies 5 rack units (5RU), which corresponds to 10.46 inches (26.6 cm) of vertical rack space. This is appropriate for taller equipment chassis that exceed the 2–3RU profile of most standard shelves.

Q: Will the SS5-23VTR fit in a standard 19-inch rack enclosure?

A: Yes. The SS5-23VTR is 19 inches (48.3 cm) wide and designed for EIA/IEC standard 19-inch rack rails. It is compatible with Middle Atlantic enclosures and most compliant third-party 19-inch rack systems.

Q: How deep is the SS5-23VTR shelf platform?

A: The shelf platform is 23 inches (58.4 cm) deep, which is specifically sized for VTR chassis, tower-footprint UPS units, and NVR appliances that extend beyond the reach of standard 16–18 inch shelves.

Q: How many mounting points does the SS5-23VTR use?

A: The SS5-23VTR uses four mounting points, attaching to the rack rails at four positions. This four-point attachment distributes the load from heavy equipment and prevents racking or pull-away under dynamic conditions, particularly important at the 75 lb weight limit.

Q: What finish does the SS5-23VTR have?

A: The shelf is finished in black powder coat, consistent with standard rack interior finishes and durable against the abrasion of repeated slide cycles and installation contact.

Marty Allison

The SS5-23VTR is a shelf I reach for when an integrator is racking a tower-footprint NVR or a large UPS and the standard 16-inch shelf just isn't going to cut it — the 23-inch depth and 75 lb capacity cover what the lighter shelves can't, and the sliding mechanism means your technician isn't crawling behind the rack every time a drive needs swapping or a cable needs reseating.

Technical Highlights:

• 75 lb Capacity at 23-Inch Depth: Most comparable sliding shelves top out at 44–55 lbs on a shorter platform. The SS5-23VTR's 75 lb / 34 kg rating at full 23-inch depth is the spec that makes it viable for heavier NVR appliances and rackmounted UPS units that would overstress a standard shelf.
• 4-Point Rail Attachment: Four mounting points on a 23-inch, heavily loaded shelf isn't just a nice-to-have — it's load physics. At 75 lbs on a cantilever that long, two-point front mounting would introduce measurable deflection and rail stress over time. Four points keep the platform level and stable through repeated slide cycles.
• 5RU Height Allocation: The 10.46-inch vertical footprint gives you physical breathing room above and below the shelf platform for cable drape, PDU positioning, and airflow — not wasted space if your equipment chassis itself is 3–4RU tall.

Deployment Considerations:

• Verify your enclosure interior depth before ordering. The shelf is 23 inches deep; you need enough rear clearance for the shelf travel plus cable bend radius on whatever is sitting on it. Shallow enclosures under 28 inches interior depth will likely require rear door removal or significant cable management modifications.
• The 17.5 lb shipping weight (7.9 kg) is for the shelf alone — factor combined freight weight early if you're ordering multiple units for a large rack build, since this shelf is heavier than most integrators expect before they pick it up.

The SS5-23VTR earns its place in broadcast, security operations center, and enterprise AV rack builds where a mix of tower-chassis and rack-native gear lives in the same enclosure and service access matters — not the shelf for a clean NVR-only rack where fixed shelves and blanks are the right call.