Six stepped rows hold nine potted plants across a 47-in frame only 10-in deep, so a collection lines a wall or a balcony rail without blocking the walkway. Row gaps run 9-in, 13.5-in, 14-in, and 15-in, giving tall stems headroom on one step while trailing vines drape from the one above. Each layer is rated for 33 lbs on screw-fastened pine joints over a wide base. The pine is carbonized at high temperature and varnished smooth, and slatted boards drain watering runoff and let air reach the roots. The whole rack weighs 13 lbs in total.