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Ryanfire FS Collar

Ryanfire FS collars consist of a high quality stainless steel case lined with a highly reactive graphite infused material. The FS Collars are designed to maintain the fire resistance of fire rated walls for up to 120 minutes.
Upon exposure to heat the FS collar will quickly and effectively close any openings that may form due to the melting away of services.

Ryanfire FS Collar
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