This glass dish allows for complete submersion of slides for staining. Comes with glass cover. Box measures 3.5" x 2.5" x 1.75" ( 89 x 63.5 x 44.5mm) L x W x H. Dish will hold 10 slides that measure 3" x 1" (75x 26x 1.3mm). Dish has 9 grooves on each side to separate each slide. Dish and cover made of soda glass - no slides included.