Hammond 1590W Series Watertight Diecast Aluminium Enclosures – Natural – Hammond 1590WLB, This Hammond 1590WLB enclosure measures 50.5 x 50.5 x 31mm and is part of a range of natural finished, watertight diecast aluminium boxes suitable for a wide range of applications. Hammond 1590WLB Watertight Diecast Enclosure Natural (50.5 x 50.5 x 31mm)