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  5. Fiber Optic Splice Closures (FOSC)

No matter how complex your building entrance splice challenges might be, CommScope has an extensive portfolio of solutions that can address your specific needs. Designed to be equally effective in fit-and-forget as well as multiple re-entry situations, our fiber optic splicing closures employ a revolutionary sealing technology that keeps your splices safe and secure—in any environment.

• Available in a variety of sizes and styles
• Compatible with most cable types (loose buffer tube, central core tube, loose fiber, and ribbon)
• Supports all splicing applications (express, tap-off, branch and repair)

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791217-000 | FOSC400-D5-NT-0-NNV 791217-000 | FOSC400-D5-NT-0-NNV
Variant of FOSC-400
FOSC® 400 D5 Fiber Optic Splice Closure, Heat Shrink Cable sealing, no pre-installed tray, with test valve
791217-000 | FOSC400-D5-NT-0-NNV
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 400
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 1 oval port (2 cables) + 5 round ports
  • Cable Sealing Type: Heat shrink
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 576
  • Splicing Capacity, Mass Fusion, ...: 1152
SpecificationsSpecs
791217-000 | FOSC400-D5-NT-0-NNV
  • Product Brand: FOSC®
  • Product Series: FOSC 400
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 1 oval port (2 cables) + 5 round ports
  • Cable Sealing Type: Heat shrink
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 576
  • Splicing Capacity, Mass Fusion, ...: 1152
  • Regional Availability: Latin America | North America
792723-000 | FOSC400-A4-16-1-BGV 792723-000 | FOSC400-A4-16-1-BGV
Variant of FOSC-400
FOSC® 400 A4 Fiber Optic Splice Closure, Heat Shrink Cable sealing, one pre-installed 16-splice tray, cable blocking, ground feedthrough lugs, with test valve
792723-000 | FOSC400-A4-16-1-BGV
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 400
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 1 oval port (2 cables) + 4 round ports
  • Cable Sealing Type: Heat shrink
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 48
SpecificationsSpecs
792723-000 | FOSC400-A4-16-1-BGV
  • Product Brand: FOSC®
  • Product Series: FOSC 400
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 1 oval port (2 cables) + 4 round ports
  • Cable Sealing Type: Heat shrink
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 48
  • Regional Availability: Latin America | North America
795423-000 | FOSC450-B6-6-TAP-8P-12 795423-000 | FOSC450-B6-6-TAP-8P-12
Variant of FOSC-450
FOSC® 450 A4 Fiber Optic Splice Closure with one 8-port tap, 12 dB
795423-000 | FOSC450-B6-6-TAP-8P-12
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: None
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 144
  • Splicing Capacity, Mass Fusion, ...: 288
SpecificationsSpecs
795423-000 | FOSC450-B6-6-TAP-8P-12
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: None
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 144
  • Splicing Capacity, Mass Fusion, ...: 288
  • Regional Availability: Latin America | North America
813570-000 | FOSC-400A4-S24-1-NGV 813570-000 | FOSC-400A4-S24-1-NGV
Variant of FOSC-400
FOSC® 400 A4 Fiber Optic Splice Closure, Heat Shrink Cable sealing, one pre-installed 24-splice tray, ground feedthrough lugs, with test valve
813570-000 | FOSC-400A4-S24-1-NGV
  • Regional Availability: Asia | EMEA
  • Product Brand: FOSC®
  • Product Series: FOSC 400
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 1 oval port (2 cables) + 4 round ports
  • Cable Sealing Type: Heat shrink
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 48
SpecificationsSpecs
813570-000 | FOSC-400A4-S24-1-NGV
  • Product Brand: FOSC®
  • Product Series: FOSC 400
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 1 oval port (2 cables) + 4 round ports
  • Cable Sealing Type: Heat shrink
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 48
  • Regional Availability: Asia | EMEA
813678-000 | FOSC450-A4-4-TAP-2P-08 813678-000 | FOSC450-A4-4-TAP-2P-08
Variant of FOSC-450
FOSC® 450 A4 Fiber Optic Splice Closure with one 2-port tap, 8 dB
813678-000 | FOSC450-A4-4-TAP-2P-08
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 4 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: None
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 96
  • Splicing Capacity, Mass Fusion, ...: 144
SpecificationsSpecs
813678-000 | FOSC450-A4-4-TAP-2P-08
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 4 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: None
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 96
  • Splicing Capacity, Mass Fusion, ...: 144
  • Regional Availability: Latin America | North America
816710-000 | FOSC450-B6-4-NT-0-B3V 816710-000 | FOSC450-B6-4-NT-0-B3V
Variant of FOSC-450
FOSC® 450 B6 Fiber Optic Splice Closure, Gel Cable sealing, no pre-installed tray, 4 cable attach., three ground feedthrough lugs, with test valve
816710-000 | FOSC450-B6-4-NT-0-B3V
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 144
  • Splicing Capacity, Mass Fusion, ...: 288
SpecificationsSpecs
816710-000 | FOSC450-B6-4-NT-0-B3V
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 144
  • Splicing Capacity, Mass Fusion, ...: 288
  • Regional Availability: Latin America | North America
821169-000 | FOSC450-6DSD1254NN2T-U23 821169-000 | FOSC450-6DSD1254NN2T-U23
Variant of FOSC-450
FOSC® 450 Fiber Optic Splice Closure, Gel Cable sealing, with integrated dense WDDM, B sz, 16 chan. adptr, 1431 nm starting wavelength
821169-000 | FOSC450-6DSD1254NN2T-U23
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: None
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
SpecificationsSpecs
821169-000 | FOSC450-6DSD1254NN2T-U23
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: None
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Regional Availability: Latin America | North America
824648-000 | FOSC450-BS-6-24-1-B0V 824648-000 | FOSC450-BS-6-24-1-B0V
Variant of FOSC-450
FOSC® 450 BS Fiber Optic Splice Closure, Gel Cable sealing, one pre-installed 24-splice tray, 6 cable attach., valve
824648-000 | FOSC450-BS-6-24-1-B0V
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 144
  • Splicing Capacity, Mass Fusion, ...: 144
SpecificationsSpecs
824648-000 | FOSC450-BS-6-24-1-B0V
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 144
  • Splicing Capacity, Mass Fusion, ...: 144
  • Regional Availability: Latin America | North America
830961-000 | FOSC400-B2-12-1-NGV 830961-000 | FOSC400-B2-12-1-NGV
Variant of FOSC-400
FOSC® 400 B2 Fiber Optic Splice Closure, Heat Shrink Cable sealing, one pre-installed 12-splice tray, ground feedthrough lugs, with test valve
830961-000 | FOSC400-B2-12-1-NGV
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 400
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 1 oval port (2 cables) + 2 round ports
  • Cable Sealing Type: Heat shrink
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 96
  • Splicing Capacity, Mass Fusion, ...: 144
SpecificationsSpecs
830961-000 | FOSC400-B2-12-1-NGV
  • Product Brand: FOSC®
  • Product Series: FOSC 400
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 1 oval port (2 cables) + 2 round ports
  • Cable Sealing Type: Heat shrink
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 96
  • Splicing Capacity, Mass Fusion, ...: 144
  • Regional Availability: Latin America | North America
831824-000 | FOSC450-D6-6-R2-1-D3V 831824-000 | FOSC450-D6-6-R2-1-D3V
Variant of FOSC-450
FOSC® 450 D6 Fiber Optic Splice Closure, Gel Cable sealing, pre-installed D ribbon tray, 6 cable attachments, with test valve
831824-000 | FOSC450-D6-6-R2-1-D3V
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 576
  • Splicing Capacity, Mass Fusion, ...: 1152
SpecificationsSpecs
831824-000 | FOSC450-D6-6-R2-1-D3V
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 576
  • Splicing Capacity, Mass Fusion, ...: 1152
  • Regional Availability: Latin America | North America
833662-000 | FOSC450-B6-6-TAP-8P-21 833662-000 | FOSC450-B6-6-TAP-8P-21
Variant of FOSC-450
FOSC® 450 A4 Fiber Optic Splice Closure with one 8-port tap, 21 dB
833662-000 | FOSC450-B6-6-TAP-8P-21
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: None
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 144
  • Splicing Capacity, Mass Fusion, ...: 288
SpecificationsSpecs
833662-000 | FOSC450-B6-6-TAP-8P-21
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: None
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 144
  • Splicing Capacity, Mass Fusion, ...: 288
  • Regional Availability: Latin America | North America
843966-000 | FOSC450-B6-4-24-1-B3V 843966-000 | FOSC450-B6-4-24-1-B3V
Variant of FOSC-450
FOSC® 450 B6 Fiber Optic Splice Closure, Gel Cable sealing, one pre-installed 24-splice tray, 4 cable attach., three ground feedthrough lugs, with test valve
843966-000 | FOSC450-B6-4-24-1-B3V
  • Regional Availability: Latin America | North America
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 144
  • Splicing Capacity, Mass Fusion, ...: 288
SpecificationsSpecs
843966-000 | FOSC450-B6-4-24-1-B3V
  • Product Brand: FOSC®
  • Product Series: FOSC 450
  • Product Type: Single-ended | round fiber closure
  • Cable Ports Quantity, total: 6 round ports
  • Cable Sealing Type: Compressed gel
  • Closure Sealing Type: Dome-to-base clamp with O-ring
  • Closure Style: Single-ended
  • Flash Test Valve: Pre-installed
  • Splicing Type, Supported: Mass fusion | Single fusion
  • Main Cable Diameter, maximum: 25 mm | 0.984 in
  • Splicing Capacity, Single Fusion...: 144
  • Splicing Capacity, Mass Fusion, ...: 288
  • Regional Availability: Latin America | North America
Compare
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Video

Fiber optic splice closures (FOSC)

Watch
FOSC-400-data-sheet-322615ae-hero500
Data Sheet

FOSC 400: Fiber optic splice closure