ACR Firefly PRO SOLAS [3970.3] Outdoor | Weather Instruments 4" x 20 studs but

4" x 20 studs but with a smaller threaded stud inserted into the base

Because the transducer is installed almost flush to the hull

This enclosure is designed to connect directly into the boat's internal pressurized water system

Load Equivalent Number (LEN) - 1

Made for the adventurous fisherman

ACR Firefly PRO SOLAS [3970.3] Outdoor | Weather Instruments 4" x 20 studs butFirefly PRO SOLAS When it comes to saving lives, anything less than the best is not an option. The all new Firefly PRO SOLAS rescue strobe lights are the brightest and most feature packed strobe lights on the market today. With three (3) activation functions, toggle between the ultra bright strobe, the SOS strobe or the Steady On feature to visually alert Search and Rescue of your location. The innovative new wide light emission LEDs produces a 360