The Extron MLM 200 D is a four-gang wall mounting kit with a decorator-style opening designed for use with the MLC Plus 200 controller, EBP 200 eBUS® Button Panel, and NBP 200 Network Button Panel. The MLM 200 D fits into a wall, Extron SMB Surface Mount Box, or EWB External Wall Box. The kit ships with both black and white faceplates and volume knobs, as well as a mud-ring. The MLC Plus 200, EBP 200, and NBP 200 are sold separately.