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Variation:
System 20 Backhoe Trench 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) 883 – 1399
Extension available Yes
End closure panels available Yes^
Max ring size n/a
*Box weight is dependent on which struts are used
^Maximum end closure panel use is 2.8m box width
System 20 Manhole Box 2.5m x 2m
Size – length x height (m) 2.5 x 2
Capacity (kN/m²) 20
Max trench depth** (m) 2.9
Min & Max trench widths (m) 2.44
Under strut clearance (m) 1.2
Length between struts (m) 2.25
Box weight* (kg) 1004 – 1560
Extension available Yes
End closure panels available N/A^
Max ring size 1350mm
*Box weight is dependent on which struts are used
^Maximum end closure panel use is 2.8m box width
System 20 Backhoe Manhole Box 3m x 2m
Size – length x height (m) 3 x 2
Capacity (kN/m²) 20
Max trench depth (m) 2.9
Min & Max trench widths (m) 2.94
Under strut clearance (m) 1.2
Length between struts (m) 2.75
Box weight* (kg) 1100 – 1714
Extension available 1m
End closure panels available Yes^
Max ring size 1800mm
*Box weight is dependent on which struts are used
^Maximum end closure panel use is 2.8m box width