The MB-14 is a production matte box for 15mm studio support, designed for wide-andle and large diameter lenses. It features four 6.6x6.6" filter trays, with one of each filter frame pair toothed for operation by knob or flexible whip. The box is capable of swinging away 90 degrees from the front of the lens. Also included are top, bottom, and side flags, as well as a set of hard masks.