Discover COMMAX™ - Structural Access Chambers

Company EJ
Date 28.07.2026
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COMMAXTM – The Lightweight Composite Chamber Designed for Modern Infrastructure

To meet the demand for rapid installation, cost efficiency, and durable long-term performance in infrastructure projects, EJ has developed COMMAXTM, a next-generation composite structural chamber designed for Airports, Ports and utility applications.
Designed by the experts behind EJ’s trusted access solutions, COMMAXTM combines exceptional structural strength with the advantages of lightweight composite construction, offering a reliable and sustainable alternative to traditional chamber systems.

Key Features of COMMAXTM

Exceptional Strength
Manufactured from advanced fibre-reinforced composite materials, COMMAXTM supports vertical loads of up to 900 kN while remaining significantly lighter than traditional chamber systems.

Easy Installation
The modular click-together design allows rapid assembly on site, reducing installation time, transportation costs and project complexity.

Durable and Corrosion Resistant
Designed for demanding environments, COMMAXTM offers excellent resistance to moisture, chemicals and corrosion, ensuring long-term performance.

Cost-Effective Solution
COMMAXTM helps reduce project costs thanks to:

  • No concrete backfill required
  • No internal bracing required
  • Lower handling and transportation costs
  • Easy installation

To learn more about COMMAXTM  and its technical capabilities, check out OUR PRODUCT CATALOGUE.

 

About EJ

EJ specialise in Access Covers and Drainage Gratings for Airports Runways, Pavements and Taxiways.

Leader in the design, manufacture and distribution of access solutions for water, sewer, drainage, telecommunications and utility networks worldwide, we are now a global company operating on 5 continents and promoting innovation, quality and a commitment to unrivalled customer service.

Our commercial presence around the world includes 50 sales offices, 10 manufacturing facilities and multiple research and development centers.

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Contact

EJ
Z.I de Marivaux
60149 Saint Crépin Ibouvillers
France
  • +33 3 44 08 28 00