I am looking at a warehouse facility in Georgia, it now has K-14 ESFR with a 40'-0" Deck height, Storage is in racks max 20'-0" storage height, I will need to change the sprinklers to K-17 ESFR I know this much, my question is since the building has the K-14 heads now can we install the K-17 heads on the systems that only cover the rack areas? This is a 700K sq ft facility so to change them all will be costly. All other stored materials are at 12"-0" Thanks for responses.
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