so many replies on this thread from people who dont konw what the hell they are talking about. First off, whoever said its acrylic is a dumbass, acrylic shatters sooooo easily and is a waste of money. HDPE or UHMW are the materials used on boxes, in the industrial area near my house they sell it for 130$ for a 10ft by 4 ft sheet, which is enough to make 2 good sized boxes. Dont cheap out buying a topsheet, it will just break and you will lose all that money.