This is the Movcam MM-3 Mattebox.
- For lenses up to 18mm (35mm academy)
- 104mm rear clamp adapter
- French flag and side wings for light control
- 1 fixed 4 x 4" filter holder
- 1 rotating 4 x 4" filter holder
- 16:9 ABS housing
- 15mm mini rod clamp bracket