Developed out of a robust acrylic material, the Super Dry Acrylic Series is engineered to achieve 20% RH control. Equipped with an N²-Set, the Series can be used to store any stock commonly used in laboratories or electronics in a nitrogen atmosphere. Transparent acrylic cabinet serves clear observation of items storaged inside, such as powder, chemicals, antiques, and so on. Acrylic N2 cabinet, all sides are transparent, easy for observation. SDA-200S Humidity: 20%~50%RH adjustable External dimension: W574xD549xH768 mm Internal dimension: W559xD487xH737 mm Storage capacity: 220L Weight: 20kgs Shelves: 2 steel shelves Simple Nitrogen Purge System preinstalled.