Medical Art |Orthopedic, Physical Therapy, Chiropractic Poster & Art Poster size 18"x24" shipped USPS Priority Mail at no extra charge. Replacement insurance in case of damage. Perfect arrival condition and your complete satisfaction are guaranteed. To buy in sets of 3, 5 or 8 posters please go to our Amazon inventory or our Gallery Medica store for more information. Additional posters purchased will be shipped at no additional charge. If buying as part of a set, the discount will be applied at checkout. Please contact us after purchase to confirm which poster you are choosing for the set, list each poster you would like to mix and match to make your set of three, five or eight, multiple choices of the same image is ok, use the descriptive names for each image provided.