Not that I know of but if your opening is big enough, maybe PVC wrapped in foam (like foam the insulates plumbing lines)....its an idea anyway but your space is probably not wide enough on racks, know mine are not....
What you should do is get 1 or 2 of Corson Pipers racks, they are made to hold custom boards. I put 2 mounted under my tower...I can still walk under the boards without hitting my head (You can also mount above tower or maybe even on side, have seen it done many different ways). its the best way I have seen to carry and not damage custom boards. You can email him at
Corsonpiper@gmail.com. Think cost is 280 for one or 480 for 2...then you buy the pads and mounts. Don't have a pic right now but could get you one next week, tho if you google his name you will likely find pics. Know other WW members have bought them as well as people on other forums. Holds the boards differently so they cannot be damaged