I built a new fridge/freezer last
winter, used polyiso,all panel edges sealed with
aluminum tape,all joints overlapped ,min 4 1/2'' thk,more on
hull side. Box made of 1/2''ply,epoxy soaked and
interlux perfection painted. Used a Seafrost
freezer box unit with a loose foam divider.
Compressor on medium,ice box set to 15 F, small 'muffin' fan operating when
compressor on. Draws 4 1/2 amps. If undisturbed,runs for 20min then off for 100 min with ambient air mid 80's.Left it on all summer with 2, 135w Keyocera
panels. Very happy,permanent cold
beer. [my first attempts at Formica work]