Bubbler for flue pan

[Big maple]

We have a 5x10 raised flue pan and I'd like to build a bubbler for it. Is there anyone out there who uses one on a similar sized pan and can give me the orientation of the holes on the tubes, the tube size and where they are supposed to be placed in the flues (height wise from the bottom), or maybe some detailed pictures or someone's used one?

[WF MASON]

I looked at one the other day , it was made with 1/2'' diameter thin wall tube, the hole space looked to be every inch, support legs were about 1/2" in heigth. Depending on your flue spacing , you might need to have the tube flattened some to fit between or try smaller diameter tube. I've seen the big guys flatten theirs to make them it.
And you'll need plenty of air from your blower to power it.