I need to replace the electric pan on my cottage. Old pan not to spec. I probably need a 150A/200A and 240V pan. Looking for advice on what pan (product number) I should buy from home depot. The old pan (ancient) measures 7 1/4" wide to 14 1/2" high. I know the feed wire I need (Southwire SE calbe AlumaFlex AA-8000 series aluminum alloy), but I need help with the meter pan. Please see all attached pictures; they explain far more than words can.