Panels are 1 3/4" thick with correspondingly less interior framework and thickness of sound deadening material. Each panel is otherwise manufactured similarly to 10' high professional lines. Panels are pre-drilled so green face bolts attach each panel to metal channel. 8' backboards are usually suspended a foot off the ground. This backboard is not as quiet or pleasing as the 10' high professional series but an excellent, durable practical product, and a good seller. Typically purchased by schools, universities and parks. Most common purchases are 3 and 5 panels. Call for shipping quote. Other sizes available.