Our standard shelters and barns with plywood ready sides use 12 foot panels that are 7 feet tall that have vertical tubes with tabs welded onto them that the plywood bolts onto with 3/8 inch hardware.

3 sheets of plywood fit recessed inside each bay in the 12 foot wide panel, when they are cut down to 7 feet tall. The panels are made from the same 1-5/8 inch galvanized steel tubing.

Barns & shelters are completely modular so you can always add onto them with additional 12×12 stalls or tack / grain / hay rooms.