David Dyer-Bennet wrote: > The normal tray is an 80 slot tray. The 140 slot version is a special > high-density tray that only works with cardboard and very thin plastic > mounts, and doesn't work with versions of the projectors with arc > lights (because the blast of cooling air in those is so strong the > slides can't drop in the narrow slots). Thanks for the advice, David. We just bought an 80-slot tray and we're enjoying our recent shots of hotdogs. You are correct about the 140-slot version; it accepts only thin mounts, which our consultant in Manila do not consider professional. The Italian made Tecnodia mounts are better. Elson