The Wooden Camera UMB-1 Universal Matte Box (Clamp On) comes with a complete set of clamp-on adapters in nine sizes: 80, 87, 95, 104, 110, 114, 125, 134 and 136mm. It has a 143mm native diameter opening.

It comes standard with two rotating 4x5.65 filter stages, individual tray catchers and a folding French flag, and an optional third stage can be added. NATO standard accessory rails on the left, right and top take accessories.

The UMB-1 is designed to be user upgradable and quick to change from clamp-on to swing-away, or to ultralight when it's used on a stabiliser. It comes in a box with custom-cut foam, which can be taken out and fitted to a Pelican 1550 hard case (not included). It weighs 839 g (1.85 lb), or 1,043 g (2.3 lb) with the top flag, and measures 228.6 x 152.4 x 88.9 mm (9 x 6 x 3.5 in).