The aluminum cases we sell are built for long-term use. Tempered glass lids will support 400 lbs. of pressure. Each case also features full length piano hinges and built in support arms. The keyed cylinder lock is tamper proof. All riveted construction with solid masonite bottoms. Lightweight and portable, these cases come individually cartoned. This model is 34" x 22" x 3-1/4" and hinges along the 22" end.