J&J Fire Engineering on X: "Great photo of our latest warehouse roof and rack installation. 11,000 sprinklers heads installed in 14 weeks for a client in the north east https://t.co/cb8tN6XhLL" / X
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J&J Fire Protection LLC. | Knoxville TN
Melnor Heavy Duty Pulsating Sprinkler 3900H - The Home Depot