Reply by PumpkinCakes

Hi, I’m in the UK but I have seen some of these boxes an a US site. These boxes are really expensive but I guess if it’s your only option… Anyway, this one is 22” deep so don’t know if that’s deep enough for you but worth a look

http://www.globalsugarart.com/product.php?id=21189&name=Round%20Wedding%20Cake%20Box%2022%20inches%20by%20Bakery%20Crafts

Also, get yourself some of that non-slip rubbery matting that’s designed to go on the car dash to stop stuff slipping – it’s great to put your box onto to stop it sliding around in the boot or footwell.

Good luck!

-- Rhona @ www.pumpkincakes.co.uk