I have not been able to find any weather covers for the 328Ai nor the Ult18 speakers. These are not needed for just transport, but they need to actually function while in these covers. If you do not make them, do you know of a 3rd party that does? They do not have to be perfect, nor aesthetically pleasing. They will be out of view, but need protected. These are being used for an outdoor event where they may not be able to be moved quick enough in the event of heavy rains.