SHEL LAB 9.3 Cu Ft Vac Oven SVAC9-2SHEL LAB VAC OVEN, 9. 3 CUFT, 230V The SHEL LAB Model SVAC9 2 is one of the largest vacuum ovens on the market, with 9. 3 cubic feet of capacity. This unit also features a fully programmable Watlow PM9 Plus controller and a cool touch surface. A digital vacuum gauge shows chamber vacuum level in measurements of Torr and m Torr. The display range is 760 Torr down to 0 mTorr (Maximum permitted end vacuum is 10 mTorr. Leak rate is 30 mTorr in 30 min). A