How hot does the ducting get during the firing?
A. When installed properly, the Ventmaster is designed to introduce fresh air through the collection cup mounted under the kiln and mix it with the hot gases being drawn from the kiln. The blower motor is capable of moving 70 CFM of air. The size of the holes in both the side of the collection cup and the bottom of the kiln are sized to draw one part of hot kiln air and mix it with 69 parts of room air. The temperature of the air inside the collection cup can be up to 160 degrees F. Once it travels through the three feet of high temperature black hose into the blower the temperature has dropped to less than 110 F. By the time it is exhausted to the outside it is well below 100 F, given that the room temperature stays below 75 F.
