Hammond 1550z watertight ip66 diecast enclosures hammond 1550z220bk the hammond diecast enclosure thick wall 222 x 146 x 82mm black 1550z220bk is a thick walled diecast aluminium watertight enclosure with natural or black finish o ring sealed tongue and groove construction prevents ingress of dust and water into the enclosure and fixing screws outside the gasket area avoids the need for o rings on the screws hammond 1550z220bk diecast enclosure thick wall 222 x 146 x 82mm black