4M Trench Shields

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  • Trapped thru wall collar assemblies
  • Full length hardwood inserts in top horizontal tube and front vertical tube
  • All certified by a registered Professional Engineer to meet OSHA standards
  • Only fully gusseted steel knife edge
  • Honey-comb inner structure
  • High tensile steel throughout
  • Adjustable collars optional
  • 4-Point lifting system
  • 4-Pipe system utilized 8″ Sch. 80 spreader pipe
  • Customizable
  • Stackable