How to create a camper van seat bed using an old bed fame mounted in a Renault Trafic van

I make a camper bed seat for a van using a bed frame.
All the detailed step by step process of how to create a seat that becomes a bed for a work van that did not have any seat.
- Conversion of bed base into folding seat
- Manufacture of the extendable chassis
- Degreased and painted
- Seat assembly
- Manufacture of the 3-piece mattress
- Upholstered mattress parts
- Installation in the van