Like many other van conversion folks, I am at the stage of building/planning where materials are bolted on, measured, then removed. So it goes with my bed platform.

Today I test fitted the rails, beams and bed supports together for the first time. The bed supports are for a full mattress, but my next step is to trim it down from 54 inches to 48 inches. The mattress side nearest the rear doors will actually have a couple angles at the back corners so the edge will be close enough to the door that no pillows or humans will drop to the floor. I have a 4th cross rail of 8020 aluminum that extends the 7-1/2 inches to fill and support that area.

Everything fit well, so I removed the strapping on the bed support and chopped all the boards down to 48-1/4 inches.