Yes, they are included.
Cam with screws, but used bigger ones.
Yes it has a knob you turn to set the burners to come on you rotate the knob lower or higher as desired leave where it is a comfortable level of warmth and the burner will shut off and on as room temp fluctuates.
Great product works great
These are made specifically for Dyna-Glo brand gas heaters so I highly doubt they would fit other brand names
One order includes 2 legs
They were not available in any store near me so I ordered them and had the shipped directly to my doorstep!