½Ò»Ô´ (Cover Plate) ËÑÇÊ»ÃÔ§à¡ÍÃìẺ«è͹㹽éÒ (Concealed Sprinkler) ÊÕ¢ÒÇËÁè¹ (ÃËÑÊÊÕ RAL9003)
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Tyco RFII Cover Plate 3.1/4" diameter. Signal White finish. When room temperature exceeds 139F (59C), this fire sprinkler cap falls off so the concealed sprinkler can activate. Thread design. Manufacture Part Number #567924135 ÇÕ´ÕâÍÊÒ¸Ôµ¡Ò÷ӧҹ¢Í§½ÒÊ»ÃÔ§à¡ÍÃì¤Í¹«ÕÅ **ẺÊâÅìÇâÁªÑè¹ (ÀÒ¾ªéÒÊØ´æ)**
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