The LMB-4 is a lightweight clamp-on 2-tray matte box that offers all the features of the LMB-5 for the larger-size filters up to 6.6x6.6"
2 metal filter stage guide
6.6x 6.6" filter frames
Ready for wide angle lenses up to Ultra Prime 8R (Ansi 35mm)
Compatible with all MB14 non geared filter frames
∅156mm clamp adapter