Middle Atlantic Rackrail, 12-24, 45 RU, R4 SeriesThe Middle Atlantic Rackrail set from the R4 Series is the backbone of professional rack installations, delivering dependable support for diverse equipment in AV, IT, and data center environments. With a 45U rack height and precision engineered 12 24 threaded mounting holes, these rails are built to withstand daily use, gear insertion, and cable movement while maintaining strict alignment and reliability. Designed to integrate seamlessly with R412