Hammond 1590 Series Diecast Enclosures with Cast-In PCB Guides – Hammond 1590WNBK, This Hammond 1590WNBK enclosure measures 121 x 66 x 40mm and is part of a range of black finished, watertight diecast aluminium boxes suitable for a wide range of applications. Hammond 1590WNBK Watertight Diecast Enclosure 121 x 66 x 40 Black