North America City Navigator v7 DVD contains 111 maps, "average*" map size 13.84 MB, 1,536.3 MB total. A few maps sets are larger than 24 MB and will not load in units such as the Legend C and Vista C (Raleigh section of North Carolina is 24.3MB's, Southern Missouri is 24.2MB's, and Southern Ontario Canada is 25.3 MB's
from gpsnow.com