We have reviewed the technical information provided by the three dumb waiter vendors and have included our comments in the attached.
We have also reviewed the overhead requirements and confirm that the dimensions nominated by the three vendors fit within the existing floor to floor height of 3.2 metres.
Please note however that the internal car dimensions of 1000 x 1000 proposed by the vendors are less than the 1200 x 1200 specified in the documents. Rene Balmer has previously confirmed that the 1200 x 1200 dimensions were acceptable therefore the sizes proposed will need to be checked against the actual trolley sizes.