Lumitec Mantis Underwater Add-On LightMantis Underwater Add On Light Add an additional light to expand the standard Mantis Dock Lighting System from a 3 light kit to a 4 light package. All necessary mounting hardware, Zip Mount ties and cabling are supplied with the add on light option package. Each Mantis Dock Lighting Kit can accommodate up to a maximum of 4 lights, to add addition lights, additional kits will need to be purchased (4 light maximum per kit). WARNING: This product can