Hammond 1590 Series Diecast Enclosures with Cast-In PCB Guides – Hammond 1590MMBK, The Hammond Diecast Enclosure 1590MMBK measures 50 x 50 x 31mm and is from a range of black diecast aluminium boxes suitable for a wide range of applications. Hammond 1590MMBK Diecast Box with PCB Guides 50 x 50 x 31 Black