Hammond 1590 Series Diecast Enclosures with Cast-In PCB Guides – Hammond 1590NBK, The Hammond Diecast Enclosure 1590YNBK measures 121 x 66 x 40mm and is from a range of black diecast aluminium boxes suitable for a wide range of applications. Hammond 1590NBK Diecast Enclosure Black (121 x 66 x 40mm)