Fire rated exterior doors
External Fire Doors – Features, Purpose And Installation Tips For The Beginner : Fire Rated Exterior Doors
Quote from Article entitled External Fire Doors – Features, Purpose And Installation Tips For The Beginner:
This is one of the key features that distinguish exterior fire doors from ordinary doors. They are usually installed along the door’s frame as a way of keeping the fire, smoke, toxic fumes and inflammable gases from spreading.
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