Municipal castings


Inter-Ax2 banner

The Inter-Ax range of traditional lift out covers was developed following an extensive 3 year research programme conducted by Nottingham University to understand the mechanisms at play that cause the failure of ironwork installations. The research determined the need for ironwork design to evolve and for products to:
  • Resist movement and deformation under dynamic loading 
  • Reduce the stress transmitted through the frame into the sub-structure 
  • Provide an enlarged surface area to interact with installation and reinstatement materias

Inter-Ax achieves this due to its inherent high performance durability features:

  • Each cover section incorporates 3 points of suspension which ensures it is silent and non-rock in operation
  • In addition to this, the Inter-Ax range also features the Load Transfer System, LTS is a patented system that reduces strain from the dynamic forces created by passing traffic that would normally be transmitted into the sub-structure leading to failure in bedding materials.
Inter-Ax for many years has since been the reference for durability and performance and was the first product to feature the Load Transfer System. Available in clear opening sizes from 450x450 to 1250x675 and in 100mm or 150mm frame depths.
Inter-Ax 2 closed
Group 4 D400 load classification and in N or H Intensity.

Key Features & Benefits

  • Double triangular non-rock cover design
  • LTS durability and installation features as standard
  • Ventilated and locked options available
  • Safety grids available for a number of sizes
  • Seal plate capable option available within range
LTS logo

Load Transfer System

  • Long Term Strength
  • Resistance to shrinkage
  • Optimum working properties
  • Early site opening
  • Consistency of performance


Recommended for use in city roads carrying continuous heavy traffic.
D400 icongroup 4 icon70 psrvmotorway applicationtruck application

Standards & Approvals

kitemarkha 104/09sfa 7cewsi 7


Other Features Available

griptop logo


Technical Enquiries:
+44 (0) 166 481 4014
Customer Services:
+44 (0) 115 930 5000


Videos and pictures
  • Inter-Ax2 closed
  • Inter-Ax2 close up
  • Increased stability-Inter-Ax2
  • Inter-Ax2
  • Inter-Ax2 closed
  • Inter-Ax2 close up
  • Increased stability-Inter-Ax2
  • Inter-Ax2
inter-ax2 video thumbnail

See also

Discover our extensive range of access covers, gratings and surface boxes
Saint-Gobain PAM designs its access covers in response to traffic conditions, offering stability, safety and silence.
Use: Carriage ways, hardshoulders and pedestrian areas where cars and lorries have access.