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3M™ 2178 Series Closures

3M(TM) Fiber Optic Splice Closure 2178-XL, white background
3M(TM) Fiber Optic Splice Closure 2178-XL, white background
3M(TM) 2178-SL Fiber Optic Splice Case
3M(TM) Fiber Optic Splice Case 2178-XLB
3M(TM) Fiber Optic Splice Closure 2178-XSB, white background
3M™ Fiber Optic Splice Closure 2178 is engineered to meet common needs and field conditions, with different sizes to accommodate varying splice counts. 2178 Closures are made of a tough chemical-resistant material and have a gasket seal, making them ideal for a wide variety of applications. All 2178 closures are designed to be easy to install, easy to use and easy to re-enter.
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28 Results (Displaying results 1-15)
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Part Number3M IDSplice ConfigurationMaximum Number of PortsFlame RetardantMaximum Single Fusion Splice CapacityMaximum Mass Fusion Splice Capacity
2178-XLB-B-02-01G-30N-0N80611334030Butt3No96 Splices432 Splices
2178-LS80610933154Butt, Inline6No288 Splices864 Splices
2178-S+8180611317449Butt, Inline6No96 Splices288 Splices
2178-XSB-B-02-01G-30N-0N80611331879Butt3No48 Splices288 Splices
2178-S/FR80611008857Butt, Inline6Yes96 Splices288 Splices
2178-LS+8180611316342Butt, Inline6No288 Splices864 Splices
2178-LS/4-LUG80611012545Butt, Inline6No288 Splices864 Splices
2178-S-217280611329469Butt, Inline6No96 Splices288 Splices
2178-XSB-B-02-01G-00N-0N80611334048Butt3No48 Splices288 Splices
2178-XSB-EG-1T-6PGA80611314271Butt3No48 Splices288 Splices
2178-LS/FR80611008840Butt, Inline6Yes288 Splices864 Splices
2178-LS-217280611329477Butt, Inline6No288 Splices864 Splices
2178-LL80610933188Butt, Inline6No288 Splices864 Splices
2178-XSB/FR/0G-0T80611304819Butt3Yes48 Splices288 Splices
2178-XLB-B-02-01G-00N80611333875Butt3No96 Splices432 Splices
28 Results (Displaying results 1-15)
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  • Full range of sizes - Fits your specific application
  • No special tools required (standard torque wrench) - Easy installation and re-entry
  • Constructed of a highly chemical-resistant material - Can be deployed in most applications: buried, underground and aerial
  • Gasket seals - Reusable for easy re-entry
  • Unique strength member clamp assembly - Prevents cable sheath movement with temperature changes
  • Spacious fiber management areas - All closures provide separate areas for routing, protecting and expressing buffer tubes and ribbon fibers
  • Flexible drop or cable addition - Multiport grommets provide entry for drops or cables
  • Flame-retardant materials - All 2178 closures are available in a flame-retardant model, giving you even more application choices (Flame Retardant Material: UL-94V-0)


ApplicationsIndoor, Wall Mount, Aerial Strand Mount, Pedestal, Underground, Pole Mount
Cable TypeDielectric
Closure Height4.6 Inch, 11.3 Inch, 11.0 Inch, 4.7 Inch, 8.0 Inch, 5.8 Inch
Closure Length27.0 Inch, 21.9 Inch, 14.6 Inch
Closure TypeBolted Half
Closure Width13.3 Inch, 10.1 Inch, 8.5 Inch
Family2178 Series
Flame RetardantYes, No
Grommet Included - Model Number2178-6PGA
Indoor/OutdoorIndoor, Outdoor
Maximum Mass Fusion Splice Capacity1728 Splices, 288 Splices, 432 Splices, 864 Splices
Maximum Number of Drop Ports3, 6, 12
Maximum Number of Ports3, 6, 12
Maximum Number of Splice Trays2 Trays, 4 Trays, 12 Trays
Maximum Single Fusion Splice Capacity288 Splices, 576 Splices, 48 Splices, 96 Splices
Number of Splice Trays Included2 Trays, None, 1 Tray
Product TypeSplice Closure
Seal TypeWatertight
Splice ConfigurationInline, Butt
Splice Tray Included - Model Number2527, 2532
Splice TypeMass Fusion, Single Fusion