The RED 3-Stage Matte Box Adaptor allows you to take advantage of 3 filter trays with your RED PRO Matte Box. This adaptor replaces your 2-stage adaptor and mounts directly to the back of RED PRO Matte Box, providing a modular solution for filter tray expansion.
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov