it's a damper control on a Wood Boiler, it's a knob at the top of the boiler with an arm attached to it and a chain coming from that which goes down to a door at the bottom where you take out the ashes, but the chain is connected to a little seperate door on the one for the ashes. does anyone know what this is called and where i can find one??

what is the model?

Replacement Windows: No Big Secrets, Some Negative Aspects? (Part 1)