Marine-grade locksets have a Teflon finish which is specially designed for salt water. If you're looking for a heavy duty keypad lock for your gate, shed, or pool, a marine-grade keyless lock may be the right choice.
If you are going to install your entry keypad in a marine environment or someplace where it will be exposed to salt we highly recommend a marine-grade door lock. This finish allows greater resistance and durability for your keyless shed lock.