Lot · Fire Sprinkler Heads
Fire Sprinkler Heads Grinnell Duraspeed B48 and B40 , 165 Patented
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Sun · May 31, 2026
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ZIP 028**
petesfiretrucks
508 ratings · 100.00% positive
Description
From the seller2 Fire Sprinkler Heads Grinnell Duraspeed marked on one side, the another side marked Grinnell Patented one is marked on base B48 the other is marked B40, both marked 165 on base. Found in old mill building.
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