Middle Atlantic 5-RS23 23-Inch Bottom Runner Kit
Overview
The Middle Atlantic 5-RS23 is a bottom runner kit sized for 23-inch rack depth applications. It provides the lower rail support that keeps rack-mounted equipment from tipping forward during installation and sustained operation — a practical necessity in any open-frame or partially enclosed rack accessory build where front-to-back stability matters. At 0.25 inches tall and 1.5 inches wide, the 5-RS23 sits flush at the base without consuming usable rack unit space, and its 10-32 threaded rail interface matches the standard tapped-rail format common across Middle Atlantic enclosures and compatible third-party frames.
The UL-listed 250 lb load capacity means it can support fully loaded shelves, UPS units, and dense patch or switching equipment without deflection — relevant when you're stacking heavy network gear or power distribution in a network infrastructure rack. Shipping weight is 1.2 lbs, consistent with a steel runner construction.
Compatibility
The 5-RS23 is designed for use with Middle Atlantic rack systems that accept 10-32 threaded rail hardware, specifically 23-inch-depth open-frame and enclosed rack enclosures. Verify your enclosure's rail spacing and depth spec before ordering — Middle Atlantic offers runner kits in multiple depths (e.g., 26-inch, 31-inch variants in the RS series), and runner depth must match the internal rail-to-rail depth of the frame. This kit is not compatible with EIA-standard 12-24 threaded rail configurations; confirm your enclosure uses 10-32 tapped rails. Pairs naturally with Middle Atlantic rack shelves and fixed or vented shelf accessories within the same depth family.
Installation Notes
Runner mounts at the base of the rack frame using the existing 10-32 rail holes — no additional hardware beyond what is included is typically required for standard Middle Atlantic frames. Confirm the enclosure's internal depth accommodates a 23-inch runner before installation; mismatched depth will prevent proper seating against both front and rear rails.
