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the reference for installing Above and below sprinkler 

Question asked by Ahmed Eltaweel on Mar 11, 2016
Latest reply on Mar 15, 2016 by John Kewell

What is the NFPA reference for installing Above and below sprinkler  ?

LIKE :-

* If the distance between the false ceiling and the actual/concrete ceiling is more than 800 cm we shall install above and below sprinkler

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