Other companies also made Carousel trays but only the 80 type, not the 140. The 140 trays will not work on some of the European Kodak projectors
AIREQUIPT Rotary Slide Trays will not work on Carousel projectors.
In fact Airequipt was lucky they even worked on Airequipt projectors.
I know . I lived through it.
Francis in VT