The SP10 cooker uses a high-powered 4 inch ring burner. The stand is 13 inches high with 14 inch diameter cooking surface. Includes 20 psi regulator with stainless wrapped hose - you supply a standard propane tank.
The 4-inch ring burner is very popular in home brewing. At full blast it can theoretically pump out 185,000 BTU. More conservative test methods rate this burner at 60,000 BTU. Any way you count the BTUs, lots of people use these burners to boil 5, 10, and 15 gallon batches so in the real world they're plenty hot!
For best results:
Avoid turning the control so high that the flames are jumping up from the burner. You get a little more heat at the cost of a lot more propane. The regulator is capable of delivering a lot more gas than the burner needs, so it's completely normal to never turn the regulator up very far.
The Air Shutter controls the amount of air that gets mixed with propane before burning. The more air, the more oxygen. The more oxygen, the hotter your flame. The most efficient setting is an all-blue flame - give it as much air as possible, stopping just before the point where the flame won't stay lit.