Specifications: 20L main body (with gauge) Allowable vacuum degree: 1Torr (approx. 133Pa) Materials: Main body/PC (polycarbonate), tray/middle plate/lock cover/stop cock/PP (polypropylene), O-ring/silicone rubber Middle plate size: 310mmφ External size x height: φ400 x 399mm Weight: 4.5kg Accessories: Tray x 1, middle plate x 1, lock cover x 1, stop cock x 1