Glass wash machines are usually under bench and take either 435mm x 435mm or 450mm x 450mm racks. Also generally these units have shorter wash cycles than dish washers. Please note that most units these days have Rinse and Drain pumps though not all makes and models. If you are on tank water for example then you really should have unit with Rinse pump as water pressure is generally lower on tank water. Drain pumps are mainly useful when the waste out machine is lower than drain where installed. Please contact us and we can go into greater detail and options with you.