The 5.65 x 5.65 MB-20 matteboxes easily adapt for use with lightweight support, bridgeplate support rods, or clamped on and supported by the camera lens. The swing-away Mattebox system works with wide angle lenses and provides two or three independently rotating filter stages for filter sizes up to 5.65 x 5.65. The MB-20 system includes a unique adjustment system to ensure precise fit. Optional top, bottom and side flags and masks are available for optimal light control. ARRI's MB-20 System is the most flexible, compact mattebox available. The systemaccepts virtually all professional lenses including the Canon 4.7 x 11 and Fujinon 4.5 x 13, HD Primes, and all film format prime lenses as wide as 14mm. The lockable swing-away mechanism makes lenses access fast and easy. The MB-20 System I uses a quick release removable sunshade for close-up and multiple camera work; while the MB-20 System II includes a protective cage around the sunshade for heavy duty use in demanding production environments. Both are compatible with the same support brackets, filter rings and filter trays. Filter trays for the MB-20 system are designed to be both practical and flexible. The Combo 1 filter tray holds either a 4 x 5.65 filter horizontally orvertically and also accommodates a 5 x 5 square filter. The Combo 2 filter tray holds a 5.65 x 5.65 square filter or a 5 x 6 filter. Both filter trays feature spring-loaded holders to make filter handling fast and simple.