Perko Fold Down Combination Masthead Horizontal Mount All-Round Light White. This Combination/Masthead light has a horizontal mount and folds down 90 degrees in either direction opposite of the plane attachment plate. This light features a zinc alloy polymer top base and lens. It also features a 3/4" anodized aluminum tube. Two 12 volt bulbs are included with the light. The vertical height of the light is 14-1/4" and it has a base dimension of 2" x 1-1/2". The required screw size for installation is #8. Specifications for Perko Fold Down Combination Masthead Horizontal Mount All-Round Light: Manufacturer: Perko Color: White Features of Perko Fold Down Combination Masthead/White All-Round Light Horizontal MountReduced Glare Design Black Polymer Top with Clear Polymer Lens Black Polymer Base Polymer Adapters for Flat or "V" Type Mount Contains Notch for Through-Base Wiring Fold-Down Adjustable Angle Bulb: 12 Volt (Included) Pole: 3/4" Dia. Anodized Base Dimensions : 2" x 1-1/2" Screw Size: #8 Package Contents: Perko Fold Down Combination Masthead/White All-Round Light Perko 1181DP0CHR: Fold Down Combination Masthead Horizontal Mount All-Round Light White