Middle Atlantic R4CN-4536B 45U 4-Post Open Frame Rack
Overview
The Middle Atlantic R4CN-4536B is a 45-rack-unit, 4-post open-frame rack designed for AV equipment rooms, security head-end closets, and IT infrastructure deployments where airflow, accessibility, and high load capacity matter more than enclosure security. With 36 inches of usable depth and a 2,000 lb static weight capacity, this rack handles dense NVR stacks, video management servers, PoE switch arrays, and patch panels without reinforcement concerns. The R4CN-4536B ships from domestic manufacturing and carries TAA compliance, making it suitable for government and federal procurement without additional sourcing review. For builds requiring a rack enclosure or housed cabinet, this open-frame model is not the right fit — but for integrators who need unrestricted front, rear, and side access during commissioning and servicing, it removes every constraint a cabinet introduces.
Compatibility
The R4CN-4536B uses standard cage nut rails with a 19-inch panel width, accepting any EIA-310-compliant 19-inch rack-mount equipment. Compatible device categories include network video recorders, PoE network switches, UPS units, patch panels, fiber termination panels, video management servers, and KVM systems. The 36-inch usable depth accommodates most 1U–4U enterprise appliances and deep 2U/4U servers without rear-rail extension kits. The full 84.22-inch overall height (78.75 inches usable, 45 RU) integrates with standard overhead cable management trays and ladder rack systems. The UL-rated 800 lb dynamic load capacity covers real-world populated rack weights across typical IP camera head-end configurations. The 2,000 lb static capacity provides margin for worst-case fully populated builds. For shallow equipment or wall-mount scenarios, consider a 2-post or wall-mount rack from the Middle Atlantic rack and enclosure line instead.
Installation Notes
Overall footprint is 21.25 inches wide by 48 inches deep — verify floor space and ceiling clearance before delivery. The 36-inch usable depth is measured rail-to-rail; total rack depth including structural frame is 48 inches, so account for the additional 12 inches when planning aisle clearance and rear cable routing. Cage nut hardware is required for equipment mounting and is not confirmed included — source M6 cage nuts and screws separately if not supplied with rack equipment. The 78 lb shipping weight typically requires two-person handling and may require a lift for final positioning. Ground the rack frame per NEC and local electrical codes before powering any equipment. Seismic bracing or floor anchoring hardware may be required by local code for installations in seismic zones — consult a rack accessories supplier for compatible anchoring kits.
