12 Volt Sealed Side Marker and Front Position (Side) Lamp (Red/Amber) in Neoprene Body. 93 This lamp is only 50mm in diameter making it one of the most versatile lamp types within the sealed range. It features virtually unbreakable polycarbonate lenses and sonically sealed housing, providing protection against dust, dirt, moisture and corrosion. It can be flush mounted or surface mounted with use of grommets and adaptor rings or