Middle Atlantic WRK-37SA-27 37-Space 27-Inch Deep WRK-SA Series Floor Rack

The Middle Atlantic WRK-37SA-27 is a 37-space, 27-inch deep floor-standing rack built for high-density AV and security infrastructure where weight capacity, seismic certification, and long service life are non-negotiable. At 70.88 inches tall with a 64.75-inch usable interior height and a UL-listed 2,500 lb load rating, this rack is sized for serious enterprise deployments — datacenter edge rooms, security operations centers, and broadcast equipment rooms where a lightweight rack enclosure simply isn't appropriate. TAA-compliant and manufactured in the USA, the WRK-37SA-27 (often searched as WRK 37SA 27) fits procurement requirements for government and defense projects where domestic origin is mandatory.

Key Features

• 37 Rack Units of Usable Space: 64.75 inches of interior height across 37 standard EIA rack spaces — enough to stack a full NVR, patch panel, PoE switch array, UPS, and access control head-end in a single enclosure without running out of room mid-project. That eliminates the secondary rack that adds cost and complicates cable management.
• 2,500 lb UL-Listed Load Capacity: The UL-listed 2,500 lb rating is a structural floor-load figure you can hand to a facilities engineer for sign-off — not a marketing number. For high-density server and NVR builds where equipment weight climbs fast, this matters before the first rail is mounted.
• 10,000 lb Weight Capacity: The rack's total engineered weight capacity reaches 10,000 lbs — relevant in seismic zones where the enclosure must remain structurally intact under lateral load, not just static vertical load. This is the figure that drives the ASCE 7-10 seismic compliance.
• Seismic-Rated to ASCE 7-10: UL-listed for seismic load capacity and compliant with ASCE Standard 7-10, so this rack qualifies for installation in Zone 4 seismic regions and passes the structural review requirements for government facilities, hospitals, and public safety infrastructure. If your AHJ requires seismic documentation, this rack provides it.
• 27.63-Inch Overall Depth / 25.75-Inch Usable Depth: The 25.75-inch usable depth accommodates deep 1U/2U servers and full-depth NVR appliances without cramming cables at the rear. Pair this with proper cable management and you retain access to the rear door without re-routing on every maintenance visit.
• Rear Door Included: A rear door ships with the enclosure — useful for physical security of patch access and for managing airflow in rack-dense installations. Facilities that run open-frame racks in controlled rooms sometimes overlook this, but in mixed-access environments the door matters.
• 10-32 Rack Rail Type: Standard 10-32 threaded rail means compatibility with the full catalog of rack-mount hardware — no cage nuts required, no adapter kits, no special fasteners. Every NVR, switch, UPS, and panel that ships with standard 10-32 hardware mounts directly.
• TAA Compliant / Made in USA: Federal Operations Country of Origin is USA, and the rack carries TAA compliance — required for GSA schedules, DHS, DoD, and most state/municipal government procurement. This is a verified spec from the manufacturer, not a label claim.
• 24.25-Inch External Width: At 24.25 inches wide, the WRK-37SA-27 fits standard equipment room aisle layouts and clears most door frames during installation. Measure your access path before scheduling the drop-ship delivery — at 186 lbs shipping weight, this is a two-person minimum unboxing job.

Integration and Compatibility

The WRK-37SA-27 integrates into any standard 19-inch rack ecosystem. The 19-inch panel width (48.3 cm) is the EIA-310 universal standard, so NVRs from Axis, Hanwha, Hikvision, i-PRO, and Bosch mount without modification. The 10-32 threaded rail accepts all standard rack hardware directly. For security operations centers deploying multiple units, Middle Atlantic's accessory ecosystem — including rack accessories such as cable management panels, blanking panels, and power distribution units — integrates natively with this frame.

If you're building out a full surveillance infrastructure, pairing this rack with a network video recorder, a managed PoE network switch, and proper rack-mount UPS gives you a single-enclosure security head-end. The depth is sufficient for most enterprise-class NVRs and server-grade appliances without any shelf extensions.

For floor-standing rack deployments in seismic zones, no additional seismic kit is required — the ASCE 7-10 certification applies to the rack as delivered. Confirm your floor anchoring approach with the AHJ; the rack frame supports anchoring but the anchor hardware is site-supplied.

Frequently Asked Questions

Q: Is the WRK-37SA-27 TAA compliant?

A: Yes. The WRK-37SA-27 carries TAA compliance and is manufactured in the USA, making it eligible for GSA schedule procurement and government contracts requiring domestic origin under the Trade Agreements Act.

Q: What is the load capacity of the WRK-37SA-27?

A: The WRK-37SA-27 has a UL-listed load capacity of 2,500 lbs (1,134 kg) and an overall engineered weight capacity of 10,000 lbs (4,535.9 kg). The 2,500 lb figure is the UL-certified rating you can use for structural sign-off with facilities teams.

Q: Is the WRK-37SA-27 seismic rated?

A: Yes. The WRK-37SA-27 is UL-listed for seismic load capacity and compliant with ASCE Standard 7-10, qualifying it for installation in seismic zones where AHJ documentation is required — including government buildings, hospitals, and public safety facilities.

Q: What rack rail type does the WRK-37SA-27 use?

A: The WRK-37SA-27 uses standard 10-32 threaded rails. No cage nuts are required; standard 10-32 rack hardware mounts directly, which is compatible with the vast majority of 1U/2U enterprise equipment.

Q: How deep is the usable interior of the WRK-37SA-27?

A: The usable interior depth is 25.75 inches (65.4 cm), with an overall rack depth of 27.63 inches (70.2 cm). This comfortably accommodates full-depth servers and enterprise NVR appliances without rear cable pinching.

Q: Does the WRK-37SA-27 ship with a rear door?

A: Yes. A rear door is included with the WRK-37SA-27 enclosure.