A Engel 35 and a Engel 45, both are the same foot print, so if you have the height go with the 45 same current draw. I agree with all Dan y And Delezynski posted. When I first got mine 10 years ago. I took it out of the box and ran it to measure the current and it was below the Amp Spec. Both were used in the Sea of Cortez with no problem. It is fun to pull out Ice Cream after a week and it is rock hard. If the temp setting gets knock to max cold it will blow up coke cans. The only thing I have heard bad about them is the price.