A 1+1 sink is one wash compartment and one hand sink. A 3+1 sink is three compartments — wash, rinse, sanitise — plus the hand sink. Which one you need is usually decided by whether you prepare food on board or only serve it.
Coffee, pastry and pre-made dessert generally sit on the first. A cookline that breaks down raw product generally lands on the second. We are trailer builders and not your inspector, so treat that as the shape of the question rather than the answer — the answer is the one your county gives you, and it is worth getting in writing before you specify.
What it costs you in wall
Three compartments take roughly twice the run of one, and that run comes out of the cookline. On the smaller bodies this is exactly why the 3+1 carries a size rule: on the 10 ft Food Box it forces a 12 ft body, because the sinks and the existing cookline cannot both have the same wall.
On the platforms that ship with 3+1 already fitted — the 12 ft Food Box, the 14 ft Coffee & Kitchen and the 14 ft Pizza Trailer — the body was drawn around it from the start, and nothing has to move.
Decide this one first
Of all the specification choices, this is the one that most often changes which platform you are buying. It is worth settling before you fall in love with a body length. The configurator will show you the consequence either way.
Still deciding?
Send us the menu and where you plan to park. We will come back with a platform, a spec and the size rules that apply to it.