Box Lintel
Box Lintel

Lintel Description

Available to suit 215mm, 175mm and 150mm wall

Heavy duty loading conditions to suit solid wall construction. To achieve loading figures lintel must be built in with stone, block/brick-work as shown.

Steel lintels should be installed with a minimum end bearing of 150mm, bedded on mortar and levelled along its length and across its width. The lintel should be suitably propped to facilitate speed of construction (see loading table for details). All lintels should be installed with a damp proof course (DPC). See installation instructions in downloads for further information.

Standard lengths are manufactured in 150mm increments up to 3000mm and 250mm increments from 3000mm up to and including 4750mm.

The box lintel can be supplied to suit plaster (specify Box + wall size /k, e.g. Box200/K)

For stone or brick finish the box lintel is manufactured with a soffit plate. This is a continuous piece of galvanised steel welded to the underside of the lintel showing no welds and can be painted to suit finish. (Specify Box + wall size S/P, e.g. Box200 S/P).

Declaration of Performance Files

Loading Tables

  • Lintel Length (mm)
  • 600
  • 1500
  • 1650
  • 1800
  • 1950
  • 2100
  • 2250
  • 2400
  • 2550
  • 2700
  • 2850
  • 3000
  • 3250
  • 3500
  • 3750
  • 4000
  • 4250
  • 4500
  • 4750

Height (mm)

150

150

150

150

150

150

150

150

150

150

Thickness (mm)

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

S.W.L. (kN)

73

58

49

43

40

38

35

34

33

32

U.W.L. (kN)

117

92

78

69

64

60

55

54

52

51

Mass per meter length (kg/m)

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

  • Lintel Length (mm)
  • 600
  • 1200
  • 1350
  • 1650
  • 1800
  • 2100
  • 2250
  • 2400
  • 2550
  • 2700
  • 2850
  • 3000
  • 3250
  • 3500
  • 3750
  • 4000
  • 4250
  • 4500
  • 4750

Height (mm)

223

223

223

223

223

223

223

223

223

223

Thickness (mm)

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

S.W.L. (kN)

82

65

55

49

45

42

39

38

37

36

U.W.L. (kN)

131

104

88

77

72

68

62

60

59

58

Mass per meter length (kg/m)

18.8

18.8

18.8

18.8

18.8

18.8

18.8

18.8

18.8

18.8

  • Lintel Length (mm)
  • 600
  • 1200
  • 1350
  • 1650
  • 1800
  • 2100
  • 2250
  • 2400
  • 2550
  • 2700
  • 2850
  • 3000
  • 3250
  • 3500
  • 3750
  • 4000
  • 4250
  • 4500
  • 4750

Height (mm)

225

225

225

225

225

225

225

225

225

225

Thickness (mm)

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

S.W.L. (kN)

91

72

61

54

50

47

43

42

41

40

U.W.L. (kN)

146

115

98

86

80

75

69

67

65

64

Mass per meter length (kg/m)

18.8

18.8

18.8

18.8

18.8

18.8

18.8

18.8

18.8

18.8