Broads PO Silver Knight


This was in a pavement, and looks as if it might be a Post Office telephone cover.  Two triangular metal pieces.


Silent Knight D400

Available in clear openings 1210×685 or 1825×685 and 100mm or 150mm frame depths, Silent Knight D400 offers consistent high performance in all conditions.

Silent Knight D400 is rated to EN124 Group 4 D400 load classification.


Recommended for use in trunk and city roads carrying continuous fast moving traffic.

  • Class D400
  • Group 4
  • Motorway Application
  • Truck Application

Standards & Approvals

  • Kitemark
  • HA 104/09
  • SFA 7
  • CESWI 7

Download more info

Silent Knight D400 access cover

Key Features & Benefits

  • Double triangular Non-rock design
  • Skid resistant radial chequer design
  • Frame lifting points
  • LTS installation and durability features
  • Customer specific or generic badging available
  • Anti-theft locking options
  • A range of Safety Grids are available

– See more at:


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