We had a customer contact us to see if we could build a trailer that would carry three 1000 gallon ammonia tanks. We took on this project and came up with the LB-3300. After receiving the two trailers, the customer then called us to see if he could stack two more tanks on top of the three. We told him that the capacity of the trailer and frame would handle it but we did not recommend it. If he wanted 5-1000 gallon tanks we wanted to design the lowboy with that in mind.