The Extron MR Series Modular Mud Rings uses three innovative components to create standard one- through four-gang size mounting brackets/mud rings. These brackets are used to install MediaLink Controllers and architectural interfaces wherever they are needed. Made of durable, high-impact polycarbonate, these mud rings install without mounting to a stud or electrical gang box for maximum placement flexibility. The MR Series ships with extension kits for in-field expansion to the next largest size. The modular system ensures integrators always have the correct size on hand. The brackets are preassembled in standard one- through four-gang sizes, and are available in black or white.