Thomas Dudley’s award-winning foundry team has redesigned the 380×230 surface box (6270 Thomas Dudley) range.

The design has been improved to enhance performance, simplify installation and improve on-site safety.

A number of new features have also been incorporated.

  • The 380×230 surface box (6270 Thomas Dudley) is engineered from ductile iron
  • We have exploited the latest stress simulation software to design our strongest 380×230 surface box (6270 Thomas Dudley) yet
  • All 380×230 surface box (6270 Thomas Dudley) surpass the required 400kN load test by at least 10%
  • The range can be used with confidence in all D400 applications
  • 380×230 surface box (6270 Thomas Dudley) comply with HA 104 by providing lid insertion depth that has been increased by 60% to 80mm
  • 380×230 surface box (6270 Thomas Dudley) features a solid flange to maximise mortar bed area and installation strength
  • This is HA compliant with a 50mm bearing width
  • The lid has been extensively modified. The resulting improvements make it impossible for the lid to be accidentally removed by traffic:
    • The lid now has an insertion depth of more than 80mm
    • Clearance between the lid and frame is just 1.5mm for a secure fit
    • The lid features unique centring tabs which ensure the lid is always fitted correctly
    • Tabs also wedge firmly against the frame when the lid is tilted by 1.5 degrees widthways or lengthways.