Middle Atlantic BGR-4538 45U 38-Inch Deep Floor Standing Rack Frame
Overview
The BGR-4538 is a 45U, 38-inch deep steel floor rack from Middle Atlantic's BGR series — a frame-only enclosure built for security infrastructure, AV equipment rooms, and data closets where load bearing and seismic compliance are non-negotiable. At 3,000 lbs UL-rated static load capacity, it handles fully populated NVR shelves, patch panels, UPS units, and dense switching gear without flex or racking. The BGR-4538 ships as a frame only (no side panels), which keeps weight down at 182 lbs shipping and leaves room for aftermarket doors, panels, or cable management add-ons. The 35.4-inch usable depth accommodates deep servers and rackmount NVRs that standard 24-inch racks cannot fit. Finish is black wrinkle powder coat on formed steel — durable in equipment rooms that see foot traffic and rolling carts.
Compatibility
Designed around the EIA-310 19-inch panel width standard — every 19-inch rackmount device installs without adapters: network video recorders, managed PoE switches, patch panels, UPS units, and rackmount servers. The BGR series is forward-compatible with Middle Atlantic's BGR accessory ecosystem, including side panels, rear doors, casters, and seismic isolation feet. The forward rackrail design is compatible with standard 10-32 and 12-24 cage nut hardware. TAA-compliant construction (USA origin) qualifies this rack for federal, state, and HCAI (formerly OSHPD) healthcare facility installations — the OSHPD seismic certification number OPM-0444-13 covers California HCAI requirements specifically, with a rated seismic load capacity of 1,175 lbs. Gangable design allows side-by-side installation with other BGR frames for multi-bay deployments. For security integrators specifying Middle Atlantic rack solutions, the BGR series is the workhorse line for permanent equipment room builds. See the full racks and enclosures category for companion accessories.
Installation Notes
Frame-only configuration means side panels and a rear door are sold separately — verify your Middle Atlantic accessory part numbers before ordering if a fully enclosed cabinet is required (the rear door is listed as included per spec; confirm at time of order). The 25mm x 150mm swing handles on each side assist with positioning during installation but are not rated for overhead lifting — use proper material handling for the 182 lb shipping weight. At 82.88 inches tall (23 inches wide), verify door clearance before delivery. Seismic installations require the appropriate Middle Atlantic seismic kit; the 1,175 lb seismic load rating applies only when installed per the certified seismic anchor configuration per OPM-0444-13. For permanent rack infrastructure in healthcare or government facilities, confirm local seismic zone requirements against the HCAI certification before specifying.
