Attwood Marine Round Vertical Flush Mount Transom Light. The Round transom light body is translucent so it shines on both sides of a bulkhead It can be used to light an interior compartment and may also be used as a cockpit courtesy light. Rubber gasket seals lens and body to mounting surface. Includes one 7.5-watt lamp and two stainless steel #10 screws. Light provides 2-mile 135 degree transom visibility for pleasure craft up to 164 ft. (50 meters) in length. Specifications for Attwood Marine Round Vertical Flush Mount Transom Light: Manufacturer: Attwood Marine Voltage: 12 volts Color: Gray Bulb Type: LED Housing/Frame Material: Plastic Additional Features: Round Beam Angle: 135 degrees Beam Distance: 3218.7 m Fabric/Material: 304 Stainless Steel Diameter: 3 in Features of Attwood Marine Vertical Flush Mount Transom Light Housing: Grey Visibility Arc (Degree): 135 Degree Visible Range (Miles): 2-Mile Package Contents: Attwood Marine Vertical Flush Mount Transom Light Attwood Marine 6356D7: Round Vertical Flush Mount Transom Light