Protect an Allen & Heath CQ-12T or CQ-18T mixer during transport, storage, and mobile production work with a fitted iSeries hard case. The 3I1813-7-CQ1 uses a black molded polypropylene resin exterior with a padded, precut foam interior. Its insert accepts the compact CQ-12T mixer and can be adjusted by removing the perforated foam section for the larger CQ-18T. Waterproof and dustproof construction helps shield the mixer from weather, airborne debris, and incidental spills encountered between venues. An automatic pressure-equalization valve balances internal and external pressure during altitude changes, while the molded-in hinge and latch closure keep the enclosure secured. A built-in carry handle supports hand transport between vehicles, stages, rehearsal spaces, and broadcast locations. Padlock holes accept a user-supplied padlock when the case needs an added physical security measure. At 19.88 x 15.5 x 7.88 inches externally, the case provides a dedicated protective enclosure rather than a generic soft bag. The removable foam section is the key distinction for installations or production teams that need one case format to carry either supported CQ mixer size.