Thats very expensive Maple 3/4" plywood on the inside. Looks like chit. I put in a head and holding tank maserator pump , fresh water tank with running water. It had none of this...
REALLY, REALLY NICE JOB, NEMO.
I ALWAYS WONDERED WHY I WASN'T ALLOWED TO FILL THE GAS TANK AT THE MARINA!
I WONDER NO MORE!