[BJT]

There needs to be 8 inches of bumper on each side of each corner or vertex. So assuming a 4 sided robot, there needs to be a minimum of 16 inches of frame covered by bumper on each side. that minimum of 16 inches of bumper would need to be in two 8 inch pieces starting at each corner with a max 12 inch gap on the 28 inch side and a max of 22 inch gap on the 38 inch side.