Great thanks for measuring that for me. 32cm x 32cm could work. It all just about fits in the space I have alongside this 24 litre air compressor.

I think I may go with this setup then. I don't think I can really get anything bigger..

I believe that 24l one is similar to your lidl one? Does it perform well enough to remove chips do you think? How long does it work for when on constantly?