Polycarb Sight Tube Assembly (for flue pan)
A sight tube assembly that should fit almost any place you would like to put a sight tube. It has all stainless parts no brass, and the glass tube is protected so it is unlikely to get broken. It has the fittings and instructions to put it on any 1/2" fitting. Put it on the float box, the side of the pan, it will work for a drop flue or raised flue evaporator.