If this is an original equipment installation (OEM), Marine Air or the local Technical Sales Rep would have approved the size of the HVAC System...
Yes, it is not a very useful measurement for a pleasure craft, especially since the Depth typically varies along the length of the boat,...
I believe the DEPTH was stated as 7.0 feet, which should be the measurement from the Keel to the Deck @ Side taken approximately at amidships....
