PMMA acrylic tube for sealing and protecting asafety light guard with a length of 165 cm of the series “PSEN op…/1”.TheIP protection class is increased from IP65 to IP67, IP68 and IP69K. TheGore-Texmembrane at the caps prevents the intrusion of dirt and waterand internal condensation. The connection cable of the light guard isrun through an M16 PG cable screw connection and it prevents theintrusion of dirt and water.