Ribera Beach, Carmel-By-The-Sea, CA
The 18" x 24" ratio is an aspect ratio of 4:3 which is commonly used for standard photo and artwork prints.
This print could also be printed in the following sizes:
4" x 3"
12" x 9"
16" x 12"
24" x 18"
40" x 30"
48" x 36"
52" x 39"
56" x 42"