This Quartz Bank is built by Chimera, and is included in Arri's Softbank Lighting Kits. It is light-weight, vented, and collapsible. It provides soft, directional light, when mounted with the specific speed (mounting) ring for the open-face quartz-halogen, or HMI light fixture you intend to use.
Rated for use with lights of up to 4000 Watts.
The softbox comes with a one stop diffusion cloth standard, and additional 1/2 and 1/4 grid cloths are included. Substituting a half or quarter difusion or taking off the interior baffle will result in more contrast, slightly more light transmission, and less softening of the light.