I tried to post pictures of our CS inside this thread, but it wound up in the Open Forum instead (http://forum.cookshack.com/eve/forums/a/tpc/f/7091028883/m/7011054274). The vent sets 3" above the top of the smoker, and I notice very little, if any, smoke that does not go up the vent. If the vent was closer than 3", I think getting a probe into the CS would be troublesome. At 3", the probe has to go up inside the vent before it will enter the hole on the CS.