Twenty-eighth scale is one of the oddities of aircraft modelling. It owes its reputation almost entirely to a run of First World War biplanes, and new tooling in the format appears only sporadically. Dimensionally it slots neatly between the widely supported 1:32 and the even larger 1:24, so a finished machine stands comfortably beside either of its neighbours in a cabinet rather than looking stranded. For builders who already own a few large-scale subjects, a 1:28 biplane fills a gap without upsetting the visual balance of a shelf. First World War subjects bring work of their own, rigging wires, fabric surfaces and lozenge patterns, and the sheets carrying those markings are catalogued with the next size up in 1:24 and 1:28 aircraft decals. Large airframes with a consistently wide choice of types are in 1:32 aircraft model kits.
Because the format shares its decal sheets with the next size up, markings for these machines are catalogued together under 1:24 and 1:28 aircraft decals. For a consistently broad choice of large airframes, the two scales to look at are 1:32 aircraft kits and the more imposing 1:24 aircraft kits.