The 'J' series double-sided 20 foot bike rack has a sturdy vertical bar design that can park up to 36 bicycles. The all galvanized structure is made of 1 5/8 inch 0.D. pipe frame with 1 inch O.D. tube stalls. This commercial bike rack is available in all galvanized steel (shown) or colored powder coated steel. We offer an optional anchor kit to mount this bike rack for security. Portable Design.