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The Cal-Royal FBS-100 UL Listed Stainless Steel Flush Bolt is a high-performance manual flush bolt designed for fire-rated wood and metal doors in commercial and institutional settings. Engineered for doors up to 4 feet wide and 8 feet high, this durable flush bolt is UL Listed for up to 3-hour fire-rated applications and conforms to ANSI/BHMA A156.16 standards. The FBS-100 features a stainless steel lever extension that allows easy manual operation—simply flip the lever up to retract the bolt and open the inactive door, or flip it down to securely lock it in place. Its non-handed design ensures flexible installation, while the included components—two flush bolts, guides, rods, and strikes—make it a complete and reliable solution for enhancing door security and fire safety. Ideal for both new construction and retrofit projects, the FBS-100 delivers dependable performance with a sleek satin stainless steel finish.