Hammond 1550z watertight ip66 diecast enclosures hammond 1550z109 the hammond diecast enclosure thick wall 150 x 64 x 36mm natural 1550z109 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 diecast enclosure thick wall 150 x 64 x 36mm natural 1550z109