The enclosure is a Hammond 1445N1602 ,basically an aluminium extrusion with a removable top and end-caps that I had powdercoated . They are nice cos you can assemble the whole unit on the lid ,as you can see on the one pic I did a (slightly untidy) dry run on a raw lid. The knobs I bought from a place here in South Africa called RS components..they have dealers all over the world ,the part # is 4664995