Middleby Marshall 314-4

I am in the process of opening a pizzeria. For my main ovens I am going to use deck ovens. I have been given a Middleby Marshall 314-4 from a schlotsky’s that I would like to use to reheat slices. I cannot find anything about this oven, with the exception of this listing on ebay. Has anyone ever used one of these? I am going to email Middleby Marshall for more info on this oven.

this oven is a smaller model of the 360 series I think, I believe the sloskys model has no front window and may have a proprietry finger set up