The SKB R1717 multi purpose utility case is can be purchased at Shipping Cases Now.  The interior length is 017.0000 in (43.18 cm and the Interior Width is 018.0000 in (45.72 cm)   The SKB Industrial Division innovates and manufactures indestructable cases and racks for industry and the military.  These cases are waterproof and come with a full warranty. 

The MIL-STD Cases and Racks are unsurpassed in quality. A perfect combinatin of superior rotationally molded strength and ergonomic design is found in these shipping cases. The impenetrable, yet lightweight LLDPE shell provides maximum impact resistance as well as UV and solvent resistance.

The shipping cases have comfortable,  rubber over-molded cushion grip handles as well as recessed, heavy-duty twist latches will accommodate padlock. The complete gasket seal and pressure relief valve makes these shipping cases absolutely waterproof while stainless steel hardware prevents rusting. 

These cases are designed and built to withstand levels of punishment in excess of all ATA and most industrial and military shipping specifications. Several models have a pull out handle and roller blade wheels for ease in transportation.