Cap wrote:The glass is loose in my Harman, never caused a problem. Loose side to side a few mm. This allows some air to pass as Greg mentioned. Some say, it also allows some air across the top of your fire to pull away the flammable gases which can rapidly burn if you were to open the top door of your stove prior to the ash door. I've only had one ignition but that's all it takes to scare the poop out of you. Luckily was was standing back.