The Electro-Voice RMD-300 is a dual rack mount kit designed to install two R300 wireless receivers side by side in a single standard rack space. It securely holds both receivers together, creating a neat, organized, and road-ready two-channel wireless setup. Ideal for both permanent installations and touring applications, the RMD-300 helps keep equipment secure and rack-ready. For single-receiver mounting, the RM-300 is available separately.