Black Oak 4" Marine Flush Mount Spreader Light - Black Housing - Pro Series 3.0 [4BFMSL-S]4" Marine Flush Mount Spreader Light Black Housing Pro Series 3. 0 With the increasing size of boats and the major popularity of Black Oak's 4" Marine Scene Spreader Lights, Black Oak's 4 Inch Flush Mount Marine Spreaders were born. Perfect for larger center consoles, sportfish yachts, and many other applications. This light gives off a whopping 3,120 raw lumens and a very widespread 120 degree light pattern. Black Oak has taken the LED game to the