Strictly speaking when have been producing slides for many years for the excellent SUCK UK slide lights, and customers order our regular 35mm plastic mounted slide lights. However, there is now a new product that is specifically named for the slide light, to remove any doubt over the suitability.
In addition, slides are cropped to fill the frame by default as this always looks best. Customers can choose non-cropped if they wish, of course.
Further information on slides for slide lights here.
SUCK UK slide light website here.