This monster duty case retails for over $800 in stores. The construction consists of 3/8" plywood with a heavy PVC laminate on the face and a 1" esta foam lining in the interior to protect your speaker cabinet against shocks and bangs that the case might take in transit. The case also has 4 large catches to hold the top secure to the bottom and 4 handles. The hardware is all recessed into the case to prevent shearing off in transit. The case is also mounted on 4" heavy duty casters. PLEASE MAKE SUREYOU MEASURE your Leslie cabinet and compare it to the dimensions listed here before you order to avoid any errors. The ID of this case from "foam to foam" is 30" x 21 1/8" x 41 5/8" high.