Middle Atlantic SR-40-32 40-Space Pivoting Wall Rack
Overview
The Middle Atlantic SR-40-32 is a 40-space (40 RU), 32-inch-deep pivoting wall rack designed for demanding AV, security, and IT infrastructure installations where floor space is limited but equipment density is not. At 90.75 inches tall with a 23.5-inch width and a 500 lb UL-rated load capacity, the SR-40-32 delivers server-room-grade capacity on a wall-mounted footprint — the right call for equipment rooms, network closets, and surveillance head-end installations that can't dedicate square footage to a freestanding rack. Manufactured in the USA and TAA-compliant, this rack suits federal, government, and regulated-sector deployments out of the box. The SR-40-32 (often searched as SR 40 32) is part of Middle Atlantic's SR large pivoting wall rack line, built to handle real-world rack densities with verified seismic ratings and forward-compatible rail geometry.
Key Features
- 40 Rack Units (70 in usable height): 40 RU gives you room for a full surveillance head-end — NVR, managed PoE switch, UPS, patch panel, and still have slots left for expansion. The 70-inch usable height (177.8 cm) means you're not fighting for space when dense 2U and 4U equipment stacks up.
- 500 lb UL-Listed Load Capacity: UL-listed at 500 lbs (226.8 kg), this rack handles the kind of equipment loads that show up in real installations — stacked NVRs, dense UPS units, and server hardware — without qualification. Not a nameplate claim; a UL-verified number.
- 32-Inch Depth (30 in usable): The 32-inch overall depth (81.3 cm) with 30 inches of usable depth (76.2 cm) accommodates full-depth servers, 2-post patch panels, and deep NVR chassis that simply won't fit in a shallow 24-inch wall rack. If your equipment list includes anything with rear cable management requirements, this depth matters.
- Pivoting (Swinging) Design: The swing-out wall rack architecture means rear cable access doesn't require pulling equipment. The rack pivots away from the wall, giving technicians full rear access for patching, cable dressing, and maintenance — critical in tight equipment rooms where ladder racks and conduit leave no rear clearance otherwise.
- Seismic-Rated to 335 lbs (CSA Standard / ASCE): The SR-40-32 carries a seismic load capacity of 335 lbs (152 kg) per CSA Standard and ASCE requirements. For installations in seismic zones — California, Pacific Northwest, and other regulated areas — this is the spec that determines whether the rack is code-compliant for the application.
- TAA-Compliant, Made in USA: Federal Ops Country of Origin is USA, and the rack carries TAA compliance plus UL listing. Government integrators, GSA-schedule buyers, and federal facility managers can specify this without a country-of-origin waiver process.
- Forward-Compatible Rail System: The forward rackrail design is forward-compatible, meaning rack accessories, blanking panels, and mounting hardware across the Middle Atlantic product line will continue to fit as the system evolves. You won't be hunting for proprietary accessories years after installation.
- 23.5-Inch Width: Standard EIA-310 rack width at 23.5 inches (59.7 cm) accepts all standard 19-inch rack equipment without adapters. No surprises during equipment installation.
Integration & Compatibility
The SR-40-32 integrates directly into wall rack infrastructure deployments for physical security, AV distribution, and IT/network environments. The forward rackrail system accepts standard 19-inch rack equipment across all verticals — network video recorders, managed PoE switches, patch panels, UPS units, and KVM hardware all mount without modification. The seismic rating and TAA compliance make this rack a direct fit for government facilities, education campuses, and any installation subject to seismic zone requirements. The USA origin and UL listing satisfy most AHJ (authority having jurisdiction) requirements without additional documentation burdens. For installations requiring structured cabling and rack accessories such as cable management, blanking panels, and PDUs, Middle Atlantic's accessory ecosystem is forward-compatible with this rail design.
Frequently Asked Questions
Q: Is the Middle Atlantic SR-40-32 TAA-compliant for federal procurement?
A: Yes. The SR-40-32 is TAA-compliant and manufactured in the USA (Federal Ops Country of Origin: USA), making it eligible for federal and GSA-schedule procurement without country-of-origin exceptions.
Q: What is the verified load capacity of the SR-40-32?
A: The SR-40-32 carries a UL-listed load capacity of 500 lbs (226.8 kg). The seismic load capacity is separately rated at 335 lbs (152 kg) per CSA Standard and ASCE requirements.
Q: Is the SR-40-32 seismic-rated, and what standard does it meet?
A: Yes. The SR-40-32 is seismic-rated with a 335 lb (152 kg) seismic load capacity, certified to CSA Standard and ASCE requirements — suitable for installations in seismic zones where code compliance is required.
Q: How much usable depth and height does the SR-40-32 provide?
A: The SR-40-32 provides 30 inches (76.2 cm) of usable depth and 70 inches (177.8 cm) of usable height, accommodating full-depth servers and equipment within its 40 RU frame.
Q: Does the SR-40-32 accept standard 19-inch rack equipment?
A: Yes. The SR-40-32 uses a standard forward rackrail design at 23.5 inches wide, accepting all standard EIA-310 19-inch rack equipment without adapters or modifications.
Q: Why is this product drop-ship only?
A: At 269 lbs (122 kg) shipping weight and 90.75 inches tall, the SR-40-32 ships factory-direct via freight. This ensures the rack arrives on a proper freight carrier with appropriate handling rather than parcel — reducing the risk of transit damage to a large, heavy enclosure.
The SR-40-32 is the rack I spec when an integrator comes to me with a surveillance head-end or AV equipment room where floor space is off the table but the equipment list is long. Forty rack units at a UL-listed 500 lb load capacity on a wall-mount is a combination most wall racks can't touch — and the 32-inch depth means you're not forcing equipment substitutions because a shallow rack won't fit a full-depth NVR chassis.
Technical Highlights:
- 500 lb UL Load Capacity: UL-listed at 500 lbs (226.8 kg) — not a marketing figure. That's the number that matters when an AHJ asks for documentation or a client's facilities team reviews the install for liability.
- Seismic Rating (335 lbs / CSA + ASCE): The 335 lb (152 kg) seismic load capacity certified to CSA Standard and ASCE isn't a checkbox spec — in California and the Pacific Northwest, it's the difference between a compliant installation and a code violation. Confirm your local seismic zone requirements before substituting a non-rated rack.
- 30-Inch Usable Depth: With 30 inches of usable depth (76.2 cm), full-depth 1U and 2U servers, deep UPS units, and rear-cabling-intensive NVR hardware all fit without forcing shallow-chassis workarounds that add cost and complexity.
Deployment Considerations:
- At 269 lbs (122 kg) shipping weight and 90.75 inches tall, wall substrate and stud capacity need to be verified before installation — this rack fully loaded can approach and exceed 700 lbs total wall load. Engage a structural assessment early, not during the punch-list walk.
- The swing-out design requires adequate clear floor space in front of the rack — plan for at least the full rack depth (32 inches) of swing clearance plus technician working space. In tight equipment closets, this is the dimension that gets overlooked until commissioning day.
For a government facility buildout, a university campus security head-end, or any seismic-zone equipment room where TAA compliance is non-negotiable and equipment density is high, the SR-40-32 is the spec that satisfies both the structural engineer and the IT architect without compromise.
