I have a used Pit Products diamond plate aluminum helmet cabinet for sale. I bought it used myself, but the trailer I eventually purchased had shelving previously installed and this unfortunately will not fit.
It's $279 new. I would like to get $180 for it. Its 32' Wide and 16 deep.
I can bring it to a mutually convenient track day or ship for $20 FedEx Ground.
Trailer Cabinets - Deluxe Helmet Cabinet - 904