Perko's spare 112.5° side light lens is for use with the 0253 Horizontal Mount Side Lights. Designed for marine vessels under 20 meters (65.6 feet). This is a package of one lens for your vessel's navigational side lights. These lenses are 112.5° with the following dimensions: 1-5/16" Height x 2-1/8" Width. Perko's spare lenses are built from quality materials for long lasting durability.