Notes to the above.
Yes the client is disposing of the ovens because he has switched his shops to XLT ovens which are much less costly to run, are easer to clean and, he says, bake better.
Despite the above there are many still using 360 ovens.They can, but at no little cost, be made vastly more efficient in gas burning. Unfortunately the electrical consumption and clean ability cannot be improved very much.
The main consideration is cost. For those that just cannot afford the latest models they are a way to get into business.
George Mills