Meridian LED Bulkheads come in various designs. A rectangular 5w version is aluminium with polycarbonate diffuser, whilst oval and round 4w variants have a polycarbonate base and glass diffuser. An upright 9w rectangular option is black with prismatic diffuser and comes as standard or with PIR. 7w, fully polycarbonate bulkheads also have PIR and photocell options, whilst an industrial 10w die-cast fitting completes the range. All are IP44 rated except the industrial fitting at IP65