The Skutt KMT-1027-3 has a chamber that is 22" in diameter and 27" in height. The largest work it can accommodate is 20" in width by 24" in height.
Standard rates apply to firings up to cone 6; the kiln can fire to cone 10 for an additional fee.
Firings in our studio are not done on a regular basis, so it is difficult to know in advance how long it will take to schedule a firing at a specific temperature.
If you are working on a deadline, it is always possible to "rush fire" less than a full load for the price of a full load.