Polycarbonate Telecommunication Cable Chamber SK-1 (EK 358 K1 / Quality Box)

The SK-1 telecommunication cable chamber made of high-quality polycarbonate is a modern and durable alternative to traditional concrete cable chambers used in telecommunication duct systems. Thanks to its design, it can be used both as a through chamber and as a branching chamber in cable infrastructure systems.

The chamber body is manufactured from foamed polycarbonate, which has undergone specialized processing to achieve exceptional mechanical properties and high resistance to environmental factors. This material provides excellent durability while maintaining a significantly lower weight compared to conventional concrete chambers.

The chamber is equipped with four thinning points on each side, allowing the installation of Ø110 mm ducts. Its modular design enables flexible height adjustment according to site conditions and significantly reduces installation time.

The equivalent of the classic SK-1 chamber in the Quality Box product range is the EK 358 K1 model, designed to meet the requirements of modern telecommunication and technical infrastructure installations.

Applications

The SK-1 cable chamber is intended for the construction and modernization of telecommunication duct systems. It can serve as a through chamber, distribution chamber, or inspection chamber.

The product is suitable for use in:

• telecommunication duct systems
• telecommunications networks
• fiber optic installations (FTTH, FTTx)
• low-voltage power networks
• CCTV and monitoring installations
• data transmission systems
• municipal and industrial infrastructure
• cable network branching points
• service connection installations

The chamber can be installed in:

• sidewalks
• parking areas
• road lanes
• green areas
• residential developments
• industrial facilities

Construction and Design

Chamber Body

The chamber body is made of foamed polycarbonate, ensuring excellent mechanical performance and high resistance to damage.

Main material properties:

• high mechanical resistance
• high thermal resistance
• high tensile strength
• high bending resistance
• resistance to gasoline
• resistance to greases
• resistance to alkaline hydrocarbons
• self-extinguishing material
• recyclable material

Modular Design

One of the key advantages of the SK-1 chamber is its modular construction, allowing the chamber height to be adapted to specific project requirements.

Advantages of the modular system:

• adjustable height
• quick installation
• simplified assembly
• easier transportation
• flexible adaptation to terrain conditions

Duct Entry System

The chamber is equipped with multiple thinning points enabling fast and convenient cable duct entry installation.

System features:

• 4 thinning points on each side of the chamber
• compatible with Ø110 mm ducts
• no complicated processing required
• easy adaptation of installation configuration

Cover Options

The SK-1 chamber may be equipped with different types of covers depending on surface conditions and operational requirements.

Available cover options:

• steel cover for paving infill
• concrete-filled steel cover
• cast iron cover

Depending on the selected version, the following load classes are available:

• B125 – for pedestrian traffic and light vehicle traffic
• D400 – for heavy vehicular traffic

Quality Box Compact Model EK358K2

The EK358K2 model is a compact version of the SK-1 chamber equipped with a galvanized steel frame and multiple cover variants, intended for demanding operating environments.

Key features of the EK358K2 model

• compact design
• paving infill cover option
• galvanized steel frame
• high mechanical strength
• multiple thinning points for duct entries
• versatile applications

Main Advantages of the SK-1 Polycarbonate Chamber

• Alternative to heavy concrete chambers
• High mechanical resistance
• Chemical and thermal resistance
• Modular construction
• Quick installation
• Adjustable height
• Universal applications
• Long service life
• Self-extinguishing material
• Recyclable material

Technical Specifications – SK-1 Model (EK 358 K1)

Model: EK 358 K1
Type: SK-1 telecommunication cable chamber

Internal dimensions: 400 × 400 mm
External dimensions: 550 × 550 mm
Height: 630 mm (with concrete-filled cover)

Chamber body material: foamed polycarbonate
Duct entry system: thinning points for Ø110 mm ducts

Load class: B125 according to EN 124
Optional load class: D400

Technical Specifications – Compact Model EK358K2

Model: EK358K2
Typ: studnia kompaktowa

Internal dimensions: 400 × 400 mm
External dimensions: 540 × 540 mm

Internal height: 630 mm
Total height:

• 780 mm – paving infill cover
• 735 mm – concrete-filled cover
• 680 mm – cast iron cover

Load class: B125 or D400 according to EN 124

Chamber body: polycarbonate
Frame: galvanized steel

Thinning points:

• 2 × Ø160 mm on the shorter side
• 2 × Ø160 mm on the longer side

Approximate weight (depending on version):

• approx. 110 kg – paving infill cover
• approx. 100 kg – concrete-filled cover
• approx. 74 kg – cast iron cover

Why Choose the SK-1 Polycarbonate Chamber?

The SK-1 polycarbonate cable chamber is a modern solution designed to replace traditional concrete chambers. Thanks to its high material resistance, modular design, and wide configuration possibilities, it provides a reliable solution for demanding infrastructure projects.

The product is particularly recommended for:

• construction contractors
• telecommunication operators
• technical infrastructure designers
• public and private investors
• cable network administrators