Middle Atlantic CBS-MRK-42 Skirted Caster Wheelbase for MRK 42-Inch Racks

Overview

The CBS-MRK-42 is a steel skirted caster base that adds rolling mobility to Middle Atlantic MRK-series open-frame racks configured at 42 inches deep. At 4 inches tall with four casters, it raises the rack just enough to roll it across a data center floor or staging area without eating usable rack height — a practical choice for equipment rooms where racks need repositioning during builds or maintenance. The unit is finished in black wrinkle powder coat and rated to hold 1,300 lbs (589.7 kg), making it suitable for fully populated equipment racks without flex or instability under load.

Compatibility

Designed specifically for the Middle Atlantic MRK base series at 42-inch depth. Fits rack enclosures and accessories in the MRK open-frame family. Verify your rack's exact depth specification before ordering — the CBS-MRK-42 is sized for the 42-inch MRK configuration and is not interchangeable with shallower MRK variants. The wheelbase footprint is 20.88 in wide × 39.88 in deep (53 × 101.3 cm), so confirm your floor clearance and aisle width accommodate those dimensions when fully loaded.

Installation Notes

Product weight is 27.9 lbs (12.7 kg) with a shipping weight of 29.9 lbs (13.6 kg) — factor both figures into freight planning for multi-unit deployments. The rack mounting hardware attaches the base directly to the MRK frame; no supplemental bracing is indicated in the specification data. Once installed, the skirted panel conceals cabling and equipment at floor level — useful in client-facing or semi-open equipment areas. Confirm caster lock function before leaving a populated rack unattended on a sloped or uneven surface. For broader rack planning, see the rack planning guide for load distribution and cable management recommendations.