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2 Fire sprinklers antique brass upright C.S.B. 1951 165 degree mdl A #33 | eBay
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This old fire sprinkler is strictly temperature operated and cannot be easily tampered with. : r/mildlyinteresting
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Star Sprinkler Model B 165°F manufactured in 1946 | WaltBeattie.com
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Readers answer: Should cities require old apartments to put in fire sprinklers? – Daily News
