These desiccators have a reinforced aluminium frame, a door with magnetic catch and a circular rubber seal, 4 variable height shelves, a desiccant tray, silica gel and an easy to read electronic hygrometer. The desiccators are stackable and can be used with up to 26 shelves. These desiccators have a reinforced aluminium frame, a door with magnetic catch and a circular rubber seal, 4 variable height shelves, a desiccant tray, silica gel and an easy to read electronic hygrometer. The desiccators are stackable and can be used with up to 26 shelves.