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50 Series

50 Series


Engineering Data (116 KB, PDF)
  • Roll-formed 22-gauge galvanized frame
  • Formed 22-gauge galvanized blades
  • Roll-formed 22-gauge galvanized hinge (Model 50-4X has stainless steel spring hinge)
  • Available in both easy access (EA) and link plate (LP) versions for mounting the fusible link (Model 50-4X available in EA only)
  • Double-blade butterfly configuration (single-blade on Model 50-4X)
  • Insulation and scrim are required on dampers over 80 in2 in area
  • Insulation and scrim are optional on dampers less than 80 in2 in area
  • Tested to UL 555C: File R16579
  • Meets NFPA 90A requirements
  • Listed with California State Fire Marshall: Listing 3225-1577:101