From a fire protection perspective, which of the following is a disadvantage of hollow-core doors?
A. They have minimal thermal or sound-insulating value.
B. They are typically filled with foam that contributes to the fire load.
C. They are only rated for 1 hour and can only be used in 1 hour enclosures
D. They have hardware and latching mechanisms that fail early in a fire.
Answer: A. They have minimal thermal or sound-insulating value.
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