The chart below will allow you to calculate this measurement. For example, if the carport or garage is a Standard Style Double unit, 20 feet wide with 7 feet legs, add 3′ 0″ to the 7 feet leg height for a total height of 10′.

Width Standard Style Double Carport/Garage Boxed Eave and Vertical Roof Carports/Garage
12′ 2′ 6″ 2′ 0″
18′ 3′ 0″ 2′ 6″
20′ 3′ 0″ 2′ 6″
22′ 3′ 3″ 2′ 9″
24′ 3′ 6″ 3′ 0″
26′ 4′ 0″ 3′ 6″
28′ 4′ 3″ 3′ 9″
30′ 4′ 6″ 4′ 0″