Middle Atlantic PROMRK-RR40 40U Rackrail Cage Nut for MRK/VRK Series

Deliver reliable, professional rack installations for security, surveillance and network operations with the Middle Atlantic by Legrand PROMRK-RR40 40U Rackrail cage nut. Purpose-built as a rack accessory for the Extra Rackrail series, this cage nut assembly provides a secure 40U mounting platform that integrates directly with MRK and VRK series rackrail systems. The PROMRK-RR40 (manufacturer part number PROMRK-RR40) streamlines equipment installation and service, enabling rapid attachment and removal of patch panels, recorders, switches and monitoring hardware without compromising rack integrity. Built for demanding AV, IT and security environments, it reduces installation time, improves cable management access and helps minimize downtime during maintenance. Ideal for surveillance control rooms, network closets and enterprise monitoring deployments, this rackrail cage nut is a practical addition to any professional rack accessories toolkit. Improve rack reliability and simplify field service—add the PROMRK-RR40 to your next rack build or replacement project.

• Secure, professional-grade mounting: provides a stable 40U rackrail anchor that minimizes equipment movement and vibration for sensitive security and AV gear.
• Direct compatibility with MRK/VRK series: designed to integrate seamlessly with Middle Atlantic MRK and VRK racks for faster installation.
• Simplifies installation and serviceability: cage nut design enables quick device changes and routine maintenance, reducing downtime for monitoring and networking systems.
• Durable, reliable performance: engineered to withstand repeated use in high-traffic equipment racks, supporting long-term surveillance and IT deployments.
• Space-optimized rack accessory: enables efficient use of rack U-space for switches, recorders, and other critical components in security and networking environments.