Great Q, Chase! The size I got was 6″ wide x 1.92″ tall. What you can do for a more cost efficient method is use some thick MDF that will span the entire floor pan instead. Possibly double up on 1/2″ MDF and glue the panels together. Drill holes in appropriate locations and call it a day. It also adds some counter weight at the bottom so more full drawers could be opened simultaneosly.
How have the wheels held up from being stationary? Any flat spots? I’ve now seen your blog here and those youtube vids, want to know how the durometer has held up.
Surprisingly very well. No flat spots and still rolling like a champ!
could you share where you bought the wheels? Did you also have to expand the forks to fit the wheels like the guy in the videos?