Middle Atlantic 45SP/38D Multibay BGR LRD - BGR-4538LRD

Middle Atlantic BGR-4538LRD 45U Open-Frame AV/Security Rack — Seismic Rated, TAA Compliant

Overview

The Middle Atlantic BGR-4538LRD is a 45-rack-unit, 38-inch-deep open-frame floor rack engineered for demanding AV distribution, security equipment rooms, and surveillance infrastructure where load capacity, seismic compliance, and long-term expandability are non-negotiable. At 3,000 lbs UL-rated load capacity across a single bay, it handles fully populated NVR stacks, dense switch deployments, and heavy UPS units without any structural compromise. This is a frame-only unit — no rear door — which makes it the right call for high-density cable management builds where rear access and airflow take priority over enclosure.

For integrators specifying infrastructure in California hospital or state-agency projects, the BGR-4538LRD carries OSHPD certification (OPM-0444-13) under HCAI (formerly OSHPD), and is seismic load-rated to 1,175 lbs — a hard requirement for healthcare, government, and education facilities subject to ASCE seismic standards. TAA compliance (UL Listed) satisfies federal procurement requirements, and country of origin is USA, important for GSA schedules and federally funded installations.

Key Features

• 45U of usable height (78.88 in / 200.4 cm): Enough vertical space to mount a full NVR array, managed PoE switches, patch panels, UPS, and ancillary gear in a single bay — eliminating the cost and footprint of a second rack in most mid-size security rooms.
• 3,000-lb UL Load Capacity: Covers the heaviest populated security racks — fully loaded NVR chassis, dense battery backup units, and stacked switches combined rarely approach this ceiling. Spec it once and never revisit structural limits as the system grows.
• 38-inch depth (35.4 in usable): Deep enough for full-depth servers and 2U NVR appliances without the rear-of-rail overhang that forces cable routing compromises. The extra depth relative to a 24-inch rack meaningfully changes how cleanly you can route structured cabling on long-run horizontal managers.
• Seismic Rating — OSHPD OPM-0444-13, 1,175-lb seismic load capacity: This certification is required by name in California HCAI-regulated construction. If your project is in a seismic zone and the spec sheet calls for OSHPD-certified racks, this number is the one the AHJ (Authority Having Jurisdiction) will check. Most competitive open-frame racks do not carry this certification.
• Forward-compatible rail design: Middle Atlantic's forward-compatible rackrail means accessories, panels, and vertical managers from the BGR product family install without retooling. If the system expands — additional switch tier, added storage shelf — you're not buying an incompatible accessory kit.
• Gangable construction: Multiple BGR-4538LRD bays can be bolted together side-by-side to create a multi-bay open-frame infrastructure wall. This matters in large security operations centers or head-end rooms where a 2- or 3-bay run is standard, and you want a unified structure rather than independent racks that walk apart over time.
• 25mm x 150mm swing handles: Integrated into the frame design for controlled tipping and positioning during installation — practical in tight equipment rooms where forklift access isn't an option and the unit needs to be walked into position.
• Steel construction, black wrinkle powder coat finish: The wrinkle coat hides surface scratches that accumulate in active equipment rooms, and steel (versus aluminum) provides the structural rigidity that allows the 3,000-lb load rating. This is not a lightweight portable rack — it's infrastructure.
• TAA compliant, US-manufactured: Meets Trade Agreements Act requirements. For federal contracts, E-Rate funded school projects, or any procurement that mandates TAA-compliant equipment, the BGR-4538LRD satisfies that requirement without a waiver process.

Integration and Compatibility

The BGR-4538LRD uses a standard 19-inch (48.3 cm) panel width, compatible with all EIA-310 compliant rack-mount equipment. The forward rackrail design is specific to the Middle Atlantic BGR family, so accessories — blanks, cable managers, PDU mounting brackets, vertical managers — should be sourced from the BGR-compatible accessory line to ensure proper fit. The frame-only configuration means you supply your own side panels, top caps, or doors if enclosure is needed; Middle Atlantic offers these as separately ordered components. For PoE switch installations, the 35.4-inch usable depth comfortably accommodates full-depth managed switches from major manufacturers without shelf extensions. When deploying alongside network video recorders in a surveillance head-end room, the 45U capacity gives enough vertical real estate to separate NVR, storage expansion, switching, and power conditioning into clean functional zones within a single bay.

Integrators building out floor-standing rack infrastructure for security and AV systems will find the BGR-4538LRD slots naturally into a multi-bay design alongside the broader Middle Atlantic rack and enclosure line. For seismic-zone projects, review your local ASCE requirements alongside the OSHPD OPM-0444-13 certification documentation — the rack is pre-certified, but your project's structural engineer may need the cert number for plan review. A rack accessories package including PDU, blanking panels, and cable management should be specified alongside this frame to complete the installation.

Frequently Asked Questions

Q: Is the BGR-4538LRD seismic certified for California HCAI (formerly OSHPD) projects?

A: Yes. The BGR-4538LRD carries OSHPD certification number OPM-0444-13 under the ASCE/HCAI standard. Its seismic load capacity is rated at 1,175 lbs (533 kg). This certification is required by name for California hospital and state-regulated construction projects.

Q: What is the UL load capacity of the BGR-4538LRD?

A: The UL-rated static load capacity is 3,000 lbs (1,360.8 kg). This covers virtually any fully populated security or AV rack configuration, including dense NVR chassis, managed switch stacks, and battery backup units.

Q: Is the BGR-4538LRD TAA compliant?

A: Yes. The BGR-4538LRD is TAA compliant and UL Listed. It is manufactured in the USA, which satisfies Trade Agreements Act requirements for federal and GSA-schedule procurements.

Q: Does the BGR-4538LRD include a rear door?

A: No. The BGR-4538LRD ships as a frame-only configuration with no rear door. This is intentional for deployments where rear cable access and airflow are prioritized. Enclosure components (doors, side panels) are available separately from the Middle Atlantic accessory line.

Q: Can multiple BGR-4538LRD units be ganged together?

A: Yes. The BGR-4538LRD is gangable, meaning multiple bays can be bolted side-by-side to form a unified multi-bay rack wall — common in security operations centers and large head-end rooms.

Q: What rack equipment fits in the BGR-4538LRD?

A: The BGR-4538LRD accepts standard EIA-310 19-inch panel-width rack-mount equipment. With 35.4 inches of usable depth and 45U of usable height, it accommodates full-depth servers, NVR appliances, managed PoE switches, patch panels, PDUs, and UPS units.

Karl Wilson

The BGR-4538LRD is the rack I specify when a project has two hard requirements that most frames can't simultaneously satisfy: a 3,000-lb UL load rating and OSHPD seismic certification (OPM-0444-13). Those two specs together rule out the vast majority of competitive open-frame options on the market. For California healthcare or government projects, the OSHPD number alone closes the spec compliance conversation before it starts.

Technical Highlights:

• 3,000-lb UL Load / 1,175-lb Seismic Load: The static and seismic ratings operate independently — you get 3,000 lbs of vertical load for equipment weight, and a separate 1,175-lb seismic rating that the AHJ will reference against your project's ASCE requirements. Don't conflate the two numbers when filling out seismic compliance submittals.
• 35.4-inch Usable Depth: Full-depth rack-mount NVR appliances and managed switches — many running 28–30 inches deep — fit cleanly without rear-of-rail overhang. At 38 inches overall depth, you also have room for structured cabling horizontal managers at the rear without pinching cable bend radius.
• Forward-Compatible, Gangable Frame: The BGR frame system is designed to grow. Gang additional bays, add Middle Atlantic accessory components on the forward-compatible rail, and the infrastructure scales without replacing the frame. This matters on 5–10 year security infrastructure contracts where scope changes are inevitable.

Deployment Considerations:

• This ships as frame only — no PDU, no blanking panels, no side panels, no top cap. Budget and specify those separately. A 45U frame arriving on-site without blanking panels is a commissioning delay waiting to happen.
• At 165 lbs shipping weight (empty frame), plan for two-person installation and verify your floor load capacity in the equipment room before positioning — fully loaded at 3,000 lbs, the concentrated floor load in a small equipment room footprint can exceed light commercial floor ratings.

This is the right frame for a California hospital security head-end room, a GSA-schedule federal facility equipment space, or any seismic-zone project where the structural engineer needs a certified rack number on the submittal drawings — not a rack that just looks the part.