For standard storage assemblies, BAUER utilizes a universal welded steel rack (RCK-0037) of our design that safely and securely accommodates two storage cylinders whether of the ASME or the UN variety. For storage system requirements of greater capacity, multiple rack assemblies can be bolted and tubed together. These storage rack assemblies are available in either vertical or horizontal configurations. All storage rack assemblies up to 2 modules deep and 2 modules wide can be shipped completely inter-piped, bolted together, and placed horizontally on a single shipping pallet. For larger orders, a tubing and hardware kit for connecting the modules will be shipped loose for on-site assembly.