RAM Mounting Systems RAP-101U-LO11 1.5" Ball "Rugged Use" Composite Mount for Lowrance Elite-5 & Mark-5 Series Fishfinders PHFUEL3 then you need a lock

then you need a lock or latch with a reverse bevel

Manufacturer part number: 39-8M0080351

Sea Compatible Substrates Wood

NOTE: Internal space requirements: 2

The cylindrical design of the tank enables it to withstand more pressure than a cube shaped tank

RAM Mounting Systems RAP-101U-LO11 1.5" Ball "Rugged Use" Composite Mount for Lowrance Elite-5 & Mark-5 Series Fishfinders PHFUEL3 then you need a lock1. 5" Ball "Rugged Use" Composite Mount f Lowrance Elite 5 & Mark 5 Series Fishfinders The RAP 101U LO11 consists of a 2. 5" diameter round base that contains the universal AMPS hole pattern double socket arm and adapter base that inserts directly to the back of Lowrance Elite 5 and Mark 5 Fishfinders. The adapter serves as a quick release mechanism, allowing you to remove or transfer your Fishfinder in seconds. Designed into the mount is a 1. 5"