This is the standard 4"x 5" light mixing chamber supplied with the Omega Super Chromega D Dichroic II colorhead. If your original D-D mixing chamber has been damaged or gone missing, this is the proper replacement.
The used mixing boxes will have very minor cosmetic marks from previous use, but are in perfect working condition. A new liner kit has been installed, and the diffuser/attenuator panel and IR filter are in excellent condition.