Starcraft Travel Star Restoration

Sorry for the delay, I've been traveling for work and very busy. My trailer is a 20 ft box and the grid I put in got the space down to just under 12 in on center. Original was 25.5 in on center. I ripped 2X to match the aluminum tube height. 3 full width pieces in each space. 2 against the tube on each side of the space and one in the middle. Made lap joint to carry the load to the . Outer ones glues and screwed to the tube. Add 2 other short pieces to the width of each space and spaced roughly evenly inside the frame rails to help carry the center long piece. This is where most of the strength came from. Once done the floor is very solid, as strong as new if not stronger

One note, I had almost 3000 lbs of available payload on my trailer from the factory, so I was not worried about overloading with the extra lumber or the 4mm vinyl plank flooring I put in it.