3 Bay Riser Base for 31 Inch Deep for MRK Racks
3-bay riser base for 31 in (78.7 cm) deep MRK or VRK series racks, providing 2.5 in (6.4 cm) of clearance
The Middle Atlantic RIB-3-MRK-31 is a 3-bay riser base designed to facilitate efficient rough-in installations for MRK or VRK series racks. This heavy-duty welded component provides 2.5 in (6.4 cm) of height, allowing technicians to run cables through the floor directly underneath the rack. This specific model is engineered for 31 in (78.7 cm) deep racks and features a black powder coat finish. Please note that this SKU is a single component; a complete installation system requires the purchase of riser V-feet and support angles separately. For raised floor environments, optional riser feet can be used to increase the base height to match the floor level.
Specifications are supplied by the manufacturer. For complete details, check the Resources section.Key features
Specifications
| Depth | 31 in (78.7 cm) |
| Height | 2.5 in (6.4 cm) |
| Shipping Weight | 54 lbs (24.5 kg) |
| Width | 66.06 in (167.8 cm) |
| Base Series | MRK or VRK |
| Component Type | Riser Base |
| Number of Bays | 3 |
| UPC | 656747030642 |
Resources
You'll need these with it
Questions about this part
What else do I need to buy to complete the assembly?
This is a single component of a larger system; you must also purchase the required riser V-feet and support angles (such as the ANGLE-3) to complete the installation.
How much clearance does the RIB-3-MRK-31 provide?
This riser base provides 2.5 in (6.4 cm) of height, which allows for cable management to pass through the floor directly beneath the rack.
Can I adjust the height of this riser base?
While this base is 2.5 in (6.4 cm) high, you can use optional riser feet like the VFEET-3-12 to raise the assembly to match raised floor heights.
Is this part compatible with MRK racks?
Yes, this RIB series base is specifically designed for use with the MRK or VRK series of Middle Atlantic racks.
Which technical documents are available for this part?
You can access the RIB Series Riser Bases A&E Specification Sheet for technical details or download the CAD Technical Specification Drawings for design integration.

