Abel offers it in both two-stage and three-stage models. The LMB-15 holds 4x5.65 filters horizontally (non-rotating). The mattebox features extreme wide coverage so that even very wide angle lenses may be used without vignetting. It is extremely lightweight and comes with an adjustable carbon fiber top flag. Clamp rings are available for all of the popular film and video lenses with a maximum front diameter of 130mm.