Constant Exhaust over the opening of these chambers assure investigator safety. Excess anesthetic vapor is completely captured during all phases of the induction process, even while removing the animal. Connect to non-recirculating exhaust, or pair with one of our evacuation units. - Fresh gas inlet is 15mm x 22mm  Waste gas outlet is 30mm OD - Pictured is  the standard 2-Liter 942102,   -  Also available is the 1-Liter 942103 and, the 7-Liter 941447 Vented induction Chamber for larger animals or groups of animals.