Glass Door Wood Boiler

[grainfedprairieboy]

Curious if anyone has any knowledge of a wood boiler with a glass door? There seems to be plenty of hot air wood furnaces or even pellet boilers with a glass viewing door but not wood. There are also some water jacketed stoves but these are limited to DHW.

Thoughts?

 

[Duetech]

My EKO gasifier would just cover the glass with ash but it would be nice to see the flame without having to open the bottom door. It would probably have to be thick as well to take the 2100* or so temperatures. Maybe they could figure a way to use secondary air blowing across the glass before it mixes with the fuel for ignition. That would be one fancy nightlite.