Hammond 1550z watertight ip66 diecast enclosures hammond 1550z115 the hammond diecast enclosure thick wall 148 x 108 x 75mm natural 1550z115 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 148 x 108 x 75mm natural 1550z115