the fire door is usually rigged with an alarm that in some cases immediately calls the fire department
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A front door is usually at the front of a house. The back door is kind of like a fire exit at the back of the house.
B-15 door has insulation that in case of fire can hold temperature raise up to 15 minutes. B-0 door doesn't have insulation.
Fire rated doors comply with certain standards (NFPA 80) and building codes so that the door functions to reduce the spread of fire and smoke.
It has to be a fire rated door.
What
The difference is that the kindle fire is thicker but has more chances than the nook.
Yes, although the wood pellet stove and the normal wood stove can look the same on the outside, it's what is inside that makes the difference. Normal wood stoves have special vents that make it able to keep the fire going for a long time, while wood pellet stoves keep a little storage of fuel above the fire, and the "pellets" are dropped into the fire every once and a while to keep the fire going.
What
What
when there is a fire you go out of the Fire Door.
Steel door would have a higher fire rating.