Designed to be set up in less than 10 minutes. The cage uses (6) - 2 3/8" plated poles that are 12' in length and have been angled in at the top, allowing net to hang 16" inside of uprights. The sleeve for uprights is 21" and has been set in concrete. The sleeve has an 11" socket that the upright sits in, giving the net a height of 10' 4" from ground to top of pole. Net is heavy-duty 1 3/4" x 1 3/4" mesh that hooks to quick release clips that ride on a halyard system for quick, easy raising and lowering of net. Net bottom is attached to poles with velcro and three warning signs are attached to net advising spectators to keep a distance of 15' for safety reasons. Designed to meet all specifications of National Track Federation ruling Section 3 Art. 6 for high schools.