Thank you for your question.
A baffle plate is the top plate inside the stove firebox. It stops the heat from escaping the stove and going up the chimney.
A removable baffle comes out of the stove and enables your sweep to clean the chimney without having to disconnect the stove.
To find which of our stoves have removable baffle plates, check the specification section; it will be marked as "Sweep Flue through Stove? Yes".
Hope this helps?