Where to find stack supports

[calvertbrothers]

I’ve been trying to find 10” roof stack supports. Anyone have an online website I can find one?

[maple flats]

I just made them back when my evaporator was on my back patio. To find something built for it, try looking up accessories for class 1 chimneys. You may find something. An 8" insulated class A chimney would likely be 10" O.D.