5x7 Glass Plate Adapter to use sheet film in a glass plate holder
NARROWER Than Film Sheaths - make sure your film will fit
It will fit film which is 4 11/16" wide and 6 7/8" Tall -- if you insert it inside -- you could possibly use it as a spacing frame (ti would cover edges of film, plus film plane would be a bit 'deeper' into the holder than your ground glass is set up to accommodate) - see photos, ask questions - be sure this is what will work for you before you buy it!
Expect to CLEAN & DUST thoroughly prior to 1st use (and ideally before you load every time)
Use high resolution monitor to best gauge cosmetic condition
See photo(s) - this represents lot, you will get next-in-stack