Middle Atlantic R4CN-4524B 45U 4-Post Open Frame Rack
Overview
The Middle Atlantic R4CN-4524B is a 45-rack-unit, 4-post open-frame rack built for AV equipment rooms, security head-end closets, and network infrastructure deployments where full front-and-rear access to gear matters. The open-frame design lets installers route cables freely and service equipment from any angle — a practical advantage over enclosed cabinets in high-density NVR and switch builds. At 84.22 in tall with 78.75 in of usable height and a 24 in usable depth, R4CN-4524B accommodates most 1U–4U security appliances without depth constraints. Cage nut rails accept standard EIA 19 in rackmount panels and blanks.
Compatibility
Fits any network video recorder, managed PoE switch, patch panel, or UPS that follows the EIA-310 19 in rackmount standard — which covers the vast majority of commercial security and IT infrastructure hardware. The 24 in usable depth clears deep 2U and 4U NVRs common in surveillance system head-end builds. Cage nut rail type (not tapped) means compatibility with virtually all standard rackmount hardware; pre-tapped rail adapters are not required for typical deployments. The 800 lb UL-rated load capacity and 2000 lb total weight capacity handle fully populated configurations — 45 units of dense 1U switches and recorders stay well within limits. TAA-compliant and manufactured in the USA, making it eligible for federal, state, and defense procurement where country-of-origin rules apply. Pairs directly with Middle Atlantic accessories including rack shelves, lacing bars, and cable management panels designed for the R4 series frame. Appropriate for rack mounting accessories and blanking panels sized to 19 in EIA-310.
Installation Notes
Overall footprint is 21.25 in wide × 36 in deep — verify floor plan clearance before delivery; this is a full-height, 84 in frame. Shipping weight is 72 lbs; two-person lift or equipment cart required for positioning. Cage nut installation requires a cage nut insertion tool (not included) — have one on hand before starting rail population. Open-frame construction provides no inherent EMI shielding or physical security; deploy inside a locked equipment room or cage enclosure if access control is a requirement. Leveling feet or casters (sold separately) are recommended on uneven raised-floor environments.
