VC Dutchwest non-cat has no "consumables". All firebrick and the components of the everburn system are covered by the lifetime warrantee. There is a white fibrous material at the bottom of the secondary burn chamber (I think its some kind of ceramic filament?) that is not supposed to be handled roughly - but the only time you could possibly even touch it is when you have the flue disconnected and you are reaching down in there with a vacuum cleaner to clean it. There is no "blanket" material or burn tubes. My friend just got a quadrafire isle royale. Also no blanket as mentioned already, but does have the burn tubes at the top - they look very strong and it would seem difficult to bang them when loading. One thing I noticed was that stove came with a label saying it had a 72.8% efficiency rating (very nice).