The 144 Core Dome Fiber Optic Splice Closure is a durable and high-capacity enclosure designed to protect fiber optic splicing points in outdoor environments. It provides long-term reliability for aerial, underground, pipeline, and handhole installations. Built with precision engineering and made from premium-grade plastic, this closure ensures excellent mechanical strength, sealing performance, and environmental resistance. It is widely used in FTTH, backbone, and access network applications where stability and protection are essential.
Key Features
- Mechanical Sealing Design:
Utilizes an advanced mechanical sealing system that allows easy re-entry and ensures stable performance over time. The design minimizes the need for additional sealing materials while maintaining excellent air-tightness and water resistance. - High-Quality Industrial Plastic Body:
Made of impact-resistant, anti-corrosive, and UV-resistant engineering plastic, the closure withstands extreme weather conditions and long-term outdoor exposure without deformation or cracking. - Wide Cable Compatibility (Ø10–25mm):
The 6 inlet/outlet ports support a wide range of cable diameters from 10mm to 25mm, offering flexibility for different installation environments and fiber network designs. - Versatile Installation Options:
Suitable for multiple deployment methods, including aerial, underground, pipeline, and manhole installations, making it adaptable to various field conditions. - High Protection Level (IP68):
Provides IP68-grade sealing, ensuring complete protection against dust and water ingress. This allows the closure to maintain stable optical performance even in humid, rainy, or submerged environments. - 360° Access and Proper Fiber Management:
The internal structure offers 360-degree access for technicians, enabling easier splicing, re-entry, and maintenance. The design maintains a minimum fiber bending radius of >40mm, effectively preventing signal attenuation. - Large Capacity (144 Fibers, 6×24F Trays):
Accommodates up to 144 fibers with 6 splice trays, each holding 24 fibers. The tray design allows clear organization, secure fixation, and efficient space utilization for high-density connections.
Product Specifications
| Item | YF144-A01 | Cable ports | 6 Entries |
| Number of fiber fusion | 12-288 (bunchy) | Capacity of splice tray | 12/24 (bunchy) |
| Dimension (mm) | 480×240 | Weight(exclude outside box) | 4KG |
| Cable diameter(mm) | Ф8~Ф20 | Max capacity of fiber | 144 (bunchy) |
| Working temperature | -40℃~65℃ | Insulation resistance | >2×104MΩ |
| Sealing Type | Mechanical Seal Type | Installation Type | Pole-Mount |
FAQ
What is the protection level of this closure?
The 144-core dome splice closure is rated IP68, meaning it is completely waterproof and dustproof, suitable for long-term use in outdoor, underground, or submerged environments.
Can YingFeng provide OEM or ODM services for this product?
Yes. YingFeng Communication offers full OEM/ODM customization, supported by an experienced engineering and mold development team to meet unique design or branding needs.
How many fibers can this closure support?
It supports up to 144 fibers, using 6 splice trays with 24 fibers each.
FACTORY SHOWCASE
YingFeng has led the fiber optics industry as China’s No.1 manufacturer of connectors and adapters — supplying nearly 50% of the global capacity with unmatched precision and consistency.



