NBS Source

Box Lintels

Verified by manufacturer 9 months ago

IG Lintels

Used for internal or external openings for a variation of solid wall widths.

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Description

The IG box lintel has perforations along its length acting as a plaster key. Box lintels can be insulated with expanded polystyrene and conforms to BS 13163: 2008. The product is designed to carry the full load of wet masonry as soon as it is installed. Box lintels are manufactured from pre-galvanized carbon steel to BS EN 10346: 2009 DX51D plus Z600 grade to BS 5977-2: 1983 (BS EN 845-2: 2003). There is a minimum galvanized zinc coating of 600 g/m² (including both sides).


For Uniformly Distributed Load (UDL) figures, height and thickness of lintel ranges, consult manufacturers literature for details.

General information

Material

Stainless steel

Grade 1.4307 to BS EN 10088-2. Other grades available on request: contact manufacturer.

Steel

Galvanized steel to BS EN 10346: 2009.


Uniclass

Pr_20_85_48_11 Carbon steel lintelsPrimary

CAWS

F30/755 Prefabricated steel lintels

F30/85 Prefabricated steel lintels

Specification data - Carbon steel lintels

Lintel type

BOX 75.

For use in 100 mm wide solid walls. Standard load.

BOX 100.

For use in 100 mm wide solid walls. Standard load.

BOX 140.

For use in 140 mm wide solid walls. Standard load.

BOX 200.

For use in 215 mm wide solid walls. Standard load.

HD BOX 100.

For use in 100 mm wide solid walls. Heavy duty load.

HD BOX 140.

For use in 140 mm wide solid walls. Heavy duty load.

HD BOX 200.

For use in 215 mm wide solid walls. Heavy duty load.

Material finish and coating reference

Galvanized steel.

To BS EN 10346: 2009.

Stainless steel.

Grade 1.4307 to BS EN 10088-2. Other grades available on request: contact manufacturer.

Sizes

Length (manufactured in 150 mm increments):

  • BOX 75: 600–1800 mm.
  • BOX 100: 600–4800 mm.
  • BOX 140: 600–4800 mm.
  • BOX 200: 600–4800 mm.
  • HD BOX 100: 600–2700 mm.
  • HD BOX 140: 600–2700 mm.
  • HD BOX 200: 600–2700 mm.


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Insulation

Not required.

Required.

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