For vessels under 12 metres, or 39.4 feet Stamped 304 stainless. 5"L x 2-5/16"W x 1-3/8"W. Pair. Not tested to international standards. Sold in pairs, Port and Starboard One pair includes Port and Starboard lights. Note: Not for new construction, for replacement of existing lighting. Note: All USCG approved navigation lights must be mounted properly to provide the correct visual alignment and allow unimpeded sight lines. Please refer to United States Coast Guard regulations for 1 NM and 2 NM navigation lights for more information.