Fiber optic closures protect spliced fiber optic connections in outside plant, FTTX, and telecommunications networks. These sealed enclosures shield splices from moisture, dust, and environmental damage, maintaining network integrity and meeting Telcordia GR-771-CORE standards. They accommodate loose tube, micro tube, tight-buffer, and ribbon fibers across trunk, feeder, distribution, and drop applications.
Available in dome and in-line configurations, closures support 12 to over 6000 splices. Models utilize mechanical compression, heat shrink, or gasket-based sealing to achieve IP68 water and dust resistance. Housing constructed from ABS, polypropylene, or polycarbonate resists UV radiation, corrosion, and impact. Mounting options include aerial, pole, wall, and below-grade installations, with integrated splice trays and cable entry ports for organized fiber management.
Typical dimensions range from 18 to 26 inches in length, weighing 9 to 14 pounds. Operating temperatures span -40°F to +149°F for harsh environment performance. Cable entry diameters accommodate 0.315 to 1.46 inches with multiple feeder and branch ports. Closures withstand axial tensile forces exceeding 1000N while maintaining insulation resistance.
Robust environmental protection minimizes signal degradation and reduces maintenance requirements. Wedge-based sealing systems and universal splice holders enable quick installation and re-entry for simplified upgrades. Scalable designs support future network expansions and high-density applications in space-constrained environments.
In-Line Runt Closure
Compact horizontal closure sized 18.7 inches by 10 inches by 3.7 inches designed for distribution and fiber-to-premise networks with maximum capacity of 96 single fusion or 288 ribbon splices. Ideal for pedestals and small handholes with four entry ports, suitable for direct burial, below grade, pole/wall mount or aerial applications with hermetic sealing and re-entry capabilities.
Runt Closure
Versatile horizontal closure providing environmental protection for fiber splices in distribution applications with compact 17.5-inch by 10-inch by 3.5-inch size for space-constrained installations. Features mechanical sealing technology with high drop capacity suitable for aerial, buried and underground environments, tested to Telcordia GR-771-CORE standards for reliable network performance.
Cross Connect Closure
Multi-port closure designed specifically for branching and distribution applications enabling multiple cable entries with integrated cross-connect bulkheads supporting SC/APC and SC/UPC connectors. Accommodates organized fiber management with tray systems supporting express, branch and drop configurations for flexible network architecture in various installation environments.
Dome Closure
Vertical dome-shaped closure available in 6.5-inch and 9.5-inch diameter sizes offering capacities from 48 to 288 fibers with segmented end plate design. Features 4 to 7 independent cable entry ports accepting maximum 1.25-inch diameter cables, tested per Telcordia GR-771-CORE for manholes, buried and aerial applications requiring high-capacity splice management.
Drop Termination Closure
Specialized compact closure designed for fiber-to-the-home applications providing protected splicing and splitting at customer drop points with integrated cross-connect capabilities. Accommodates fiber management with splitter module integration and multi-hole grommet technology, suitable for aerial, pedestal and building entrance installations supporting last-mile connectivity requirements.
Pup Splice Closure
Miniature horizontal closure sized 6 inches by 17 inches managing up to 48 fiber splices with high-density thermoplastic construction weighing less than stainless steel. Features conversion capability allowing future expansion into larger COYOTE closures with minimal disruption, ideal for OPGW, ADSS and distribution applications requiring compact enclosure profile.
Your Trusted Supplier for Durable Fiber Optic Closures
RaxPower is a leading fiber optic closure manufacturer in China, established in 2003 and based in Hebei Province. With over 21 years of manufacturing and exporting experience, we specialize in innovative solutions for specific deployments.
In outdoor fiber optic installations, low-quality closures can cause up to 85% network failures, but our fiber optic closures are engineered to prevent this. Utilizing advanced processes like hot forging, we ensure superior strength and precise sizing for durable, reliable performance.
Guided by the Toyota TPS culture, we achieve high quality, short delivery time, and low cost. Our closures are crafted from high-quality materials such as ABS and PP, offering excellent UV resistance, corrosion resistance, and a service life exceeding 25 years.
We implement strict quality control, including raw material selection, multi-stage testing, and automation, with all products reviewed twice before packing and passing SGS tests.
We not only provide the best quality products but also offer the most competitive factory prices. Contact us for quotations or OEM/ODM service information.
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Frequently Asked Questions (FAQS)
What is a fiber optic closure?
A fiber optic closure is a protective enclosure designed to house and protect fiber optic splices from environmental factors such as moisture, dust, and physical damage, ensuring reliable network performance in outdoor and indoor applications.
What types of fiber optic closures are available?
RaxPower offers dome closures for aerial and underground applications, and in-line closures for pole or wall mounting, designed to accommodate different cable configurations and splice capacities.
What splice capacities do your closures support?
RaxPower's closures support splice capacities from 24 to 288 cores, with some dome models accommodating up to 576 splices for high-density applications.
How are the closures protected against environmental factors?
RaxPower closures are IP68 rated, providing complete protection against dust and water submersion. They feature robust sealing systems such as mechanical compression, O-rings, or heat shrink seals to maintain integrity in harsh conditions, and comply with Telcordia GR-771 standards for reliable performance.
What materials are used and what is the expected service life?
RaxPower closures are constructed from high-quality UV-stabilized engineering plastics such as ABS or polypropylene, offering excellent corrosion resistance and a service life exceeding 25 years even in extreme temperatures and harsh outdoor conditions.
How do you ensure consistent product quality across manufacturing batches?
RaxPower employs strict quality control with raw material selection and multi-stage testing. We use automated manufacturing processes and hot forging technology to ensure accurate sizing and uniform quality, with all products reviewed twice before packing.
Can you handle large-volume orders with competitive pricing?
Yes, RaxPower specializes in bulk orders for large-scale projects. With efficient production facilities and direct factory pricing, we offer competitive rates and ensure on-time delivery to meet tight project timelines.
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