RH Level : 10% ~ 50% External dimensions : (W x H x D) 40 x 69.2 x 43.7 cm Internal dimensions : (W x H x D) 36 x 59.7 x 35.7 cm Doors: Anti-Static Glass Shelves : 2 Anti-Static Shelves (Adjustable Height) Load Capacity per Shelf : 20kg Volume : 93 litres Average Power Consumption: 10W ESD-safe Cabinet : Antistatic powder-coat paint, antistatic shelves, antistatic tempered glass panels and 1Meg ohm Ground WireHygrometer : TESTO Digital thermo-hygrometer Recovers to original RH within 2 hours after accessing door for 30 seconds or less.