Ovens that are AD60 and AD70 sizes can be lifted with a couple of people and are portable and can come with stands. All the ovens AD80 size and over are more permanent ovens and come on a steel pallet that can be turned into a stand but will need cladding put on the outside or bricks built around it to make it look finished or the oven can be placed on another bench.  They are very hard to be lifted manually.