Dan Nelson, Designs Northwest Architects I just talked with the supplier for Floorgress in Seattle and they still carry the Stontech series. The supplier is United Tile. They have a relationship with a tile supplier in Denver called Design Materials, so you might want to try them.
“Add mirrors above storage (half height) to create more space? Or a full length mirror on the wall behind door.”
“I like the door for the attic as well as this look as far as storage goes.”
Enjoy your project !
Dan