Let's say you need 15 square inches per cubic foot.
For a 4 cubic foot box, that would require 60square inches.
Let's say the port takes up 1 cubic foot, you have 3 left. Do you still need a full 60square inches of port area or can you drop it down to 45 square inches?
For a 4 cubic foot box, that would require 60square inches.
Let's say the port takes up 1 cubic foot, you have 3 left. Do you still need a full 60square inches of port area or can you drop it down to 45 square inches?