Exterior Steel Fire-Rated Doors
External Fire Doors – Features, Purpose And Installation Tips For The Beginner : Exterior Steel Fire Rated Doors
Quote from Article entitled External Fire Doors – Features, Purpose And Installation Tips For The Beginner:
This applies to large buildings such as office blocks and apartment buildings where there is a risk of multiple casualties in case of fire. It appears as a requirement under different building codes. This doesn’t apply to all states but the logic and purpose is undeniable.
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