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Use a special wrench for the sprinkler installation. 9, when the width of the ventilation duct is greater than 1.2m, the sprinkler should be installed
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5pc Fire Sprinkler Head 155 , Upright Sprinklers
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Brass Dry Pendent Sprinkler Head Dry Barrel Fire Sprinkler Head 68C 1 Male Thread for Cold Storage Fire Fighting Accessories
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5 pieces) Fire Sprinkler Pendent Head - RYBB Fire Alarm Parts