I just finished my box for a single 10, have the hole cut perfectly, carpeted the entire thing with stock Ford gray carpet (got it for free). The box dimensions are 25 7/8 (L) x 10 7/8 (W) x 8 (H). I cut two pieces for each of the sides, sprayed some adhesive, stuck them on, and cut off the excess. I then took one big piece and did the same thing, except I only cut the sides keeping the roll in one piece. I was wondering if anyone had ideas so the side pieces look flush with the top. Anyone used any molding or anything else to make it more of a smooth transition?