300-038B double steaming light Z H 5 NM 0-50. Article 186838Z is intended for the configuration and application stated in the product title. Visibility: 5 NM. Horizontal mounting. Lopolight LED navigation light with IP68 protection and 10–32 VDC supply, intended for marine navigation in accordance with COLREG72. The standard housing uses anodized aluminum with a PMMA lens and A4 stainless-steel fasteners.