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