We have a child care in the basement of a church, fully wet sprinkled (except for a couple of closets). When we first did the service a couple of years ago, I noted the sprinkler heads in the basement were getting close to 50 years old, and they should think about budgeting for the replacement/testing. So, a competitor got the job. All the SR fusible heads replaced were replaced with QR heads. I thought we were to use the same type of replacement heads, as were originally installed. Am I wrong?
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