The carcasses of custom slaughtered animals will be clearly and plainly marked "NOT FOR SALE," in letters not less than 3/8 of an inch in height, immediately after the slaughter process is completed. The custom slaughtered carcass will be marked on every primal cut; leg, rump, loin, rib, shoulder, brisket, and plate. Custom prepared products must be plainly marked "NOT FOR SALE," 3/8 inch letter height, immediately after being prepared and kept so identified until delivered to the owner.
Utah Admin. Code R58-13-3