Model air league hb11 junior portable basketball stand product overview the hb11 is a junior size basketball stand from air league high quality steel and packs down into the base for portability it has a height of 55ft and a durable polyethylene backboard the scratch resistant polyurethane base can be filled with 20kg of water for stability please note that there are no balls supplied with this stand construction durable polyethylene frame and backboard the base is made from blow moul