WEBSome size options available for Medicine Cabinets are Medium, Large and Small. Typically, a medium cabinet is considered small when it's 18-24 inches wide, medium when is 42-48 inches wide and large when it's 60 inches wide. Check out a popular option, 48 in. W x 26 in. H Frameless Recessed or Surface-Mount Tri-View Bathroom Medicine …