Slot Block Barrier

Welcome to the home page of the Slot Block Barrier, the patent pending revolutionary site safety barrier exclusively manufactured by Site Supplies Direct. The slot block barrier is the only water filled barrier to hold a standard fencing panel to increase site safety, virtually eliminate potential trip hazards and give added stability to fence panels.

Independently tested my MIRA testing, the Slot Block Barrier will save time and money with the constant re-erection of site fencing and will give added visibility and corporate identity on ‘high profile’ sites. using the Slot Block barrier contractors dramatically reduce the working footprint by an average of 500mm against a standard Fence Block


  • The ONLY water filled barrier made to fit an industry standard 3.5 × 2m mesh panel.
  • Corporate colours available
  • Branding and ‘mould-in graphics’ available
  • 1250 × 150 reflective strips can be added for increased visibility
  • Lights can be added for increased visibility
  • Small footprint for inner-city projects
  • Tested to 57mph by MIRA
  • Rotates 90 degrees
  • 50mm drainage point for easy emptying
  • 75mm Water Fill point
  • 20no Units per Double Pallet (9no 3.5m Complete sets)


  • Weighs 14kg when empty
  • Weighs 320kg when full (per 2 units, 1 panel)

Examples of Slot Block Working

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