We offer a wide array of transitions designed to allow for mating our rotary airlocks to either upstream or downstream equipment (e.g. sifters, blenders, etc.). While the dimensions shown below are for inlets and outlets of the same size, we also custom fabricate to rectangular, varying opening sizes, etc. The ATR Series will simply have a round flange as opposed to the AT Series which has a square flange. The ASGR Series will also be round, but will have safety grating installed as well.