Compatible with LMB 6x6, LMB-6 and SMB-1. The triple filter frames accommodate two or three filters in a single filter frame taking two regular matte box slots and prevent unwanted reflections between glass filter surfaces. Although compatible with some legacy ARRI matte boxes, the triple filter frame achieves maximum benefits when used in combination with the tilting matte box SMB-1. Fits in a 2-stage slot of a filter stage.