This small, clear polystyrene desiccator cabinet safely stacks up to 5 units high for maximum use of lab bench space. The pull down door slides out of the way into a compartment beneath the cabinet. Rear mounted gas ports are tapered to accept tubing with ¼ to 3/8" I.D. Interior volume: 0.1 cu. ft Gas ports can be closed to use desiccator with standard desiccant cartridges.