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Variation:
System 20 Backhoe Box – 2.84m x 2m
Size – length x height (m) 2.84 x 2
Capacity (kN/m²) 20
Max trench depth** (m) 2.9
Min. & max. trench widths (m) 0.73–2.33
Under strut clearance (m) 1.2
Length between struts (m) 2.66
Box weight* (kg) 886–1399
To suit max. ring sizes (mm) N/A
Top extension available Yes
End closure panels available^ Yes
*Box weight is dependent on which struts are used
**Max trench depths are achieved by using a box and an extension
^Maximum end closure panel use is 2.8m box width
Standard Trench Box – 3.5m x 2.63m
Capacity (kN/m²) 35–39.5
Max trench depth** (m) 5.2–5.6
Min. & max. trench widths (m) 0.72–5.07
Under strut clearance (m) 1.51–1.55
Length between struts (m) 3.11–3.19
Box weight* (kg) 2068–4930
Associated manhole box Yes
Extension available Yes
End closure panel available^ Yes
*Box weight is dependent on which struts are used
**Max trench depths are achieved by using a box and an extension
^Maximum end closure panel use is 2.8m box width
Standard Trench Box – 3.5m x 4m
Capacity (kN/m²) 25–36
Max trench depth** (m) 5.2
Min. & max. trench widths (m) 1.34–4.76
Under strut clearance (m) 2.55
Length between struts (m) 3.05
Box weight* (kg) 3815–6220
Associated manhole box Yes
Extension available Yes
End closure panel available^ Yes
Standard Trench Box – 3.5m x 4m
Capacity (kN/m²) 25–36
Max trench depth** (m) 5.2
Min. & max. trench widths (m) 1.34–4.76
Under strut clearance (m) 2.55
Length between struts (m) 3.05
Box weight* (kg) 3815–6220
Associated manhole box Yes
Extension available Yes
End closure panel available^ Yes
*Box weight is dependent on which struts are used
**Max trench depths are achieved by using a box and an extension
^Maximum end closure panel use is 2.8m box width