Hammond HWCHAS Series Walnut Chassis with Aluminium Top Panels – Hammond HWCHAS1710BK, Attractively styled, rugged walnut box, 432 x 254 x 76mm, with 2mm thick aluminium top panels with black finish. Optional bottom plates are available separately. Hammond HWCHAS1710BK Walnut Chassis Alu Top Black 432 254 x 76 Wood/Black