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Heat Shields

Question asked by jpotvin on Jul 17, 2019

I have some pendent sprinkler heads where a 12" x 12" heat shield will be installed on them since they are covering under an overhead door.  Would the heat shield act as the "ceiling" since it is so big if the deflector of the heads must be installed more than the 12" maximum permitted by NFPA 13 from the top of the rail system of the door?

If more clarification is required, please let me know.

Thank you in advance.