The G3 model is a full enclosure, providing 30-35db of isolation. Completely fabricated out of steel framework. The inside walls and ceiling are covered with fiberboard to absorb as much sound as possible. The back wall is 36” wide and the 2 two doors are on a angle, giving you the option to have the back of the enclosure up against the back wall of the stage and still have access left or right. Comes with mic mounts in the ceiling for overhead mics, an LED light fixture that has DMX, cable management, and two fans for air circulation.