Box Lintels

Description

The Keystone 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 Keystone box lintel is designed to carry the full load of wet masonry as soon as it is installed. Box lintels are manufactured from pre-galvanized mild steel to BS EN 10346: 2009 DX51D plus Z600 or grade Z275 to BS 5977-2: 1983 (BS EN 845-2: 2003). There is a minimum galvanized zinc coating of 600 g/m² on both sides.

General information

Material

Galvanized steel

To BS EN 10346: 2009. DX51D plus Z600 or grade Z275 to BS 5977-2: 1983 (BS EN 845-2: 2003).

Stainless steel

Grade 304 2b 1.4307 to BS EN 10088-2. Other grades available on request: contact manufacturer.

Uniclass 2015

Pr_20_85_48_11 Carbon steel lintelsPrimary

CAWS

F30/755 Prefabricated steel lintels

F30/85 Prefabricated steel lintels

Specification data - Carbon steel lintels

Product Reference

BOX/K-75

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

BOX/K-100

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

BOX/K-150

For use in 150 mm wide solid walls. Standard load.

BOX/K-200

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

HD BOX/K-100

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

HD BOX/K-150

For use in 150 mm wide solid walls. Heavy duty load.

HD BOX/K-200

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

Material

Galvanized steel

To BS EN 10346: 2009. DX51D plus Z600 or grade Z275 to BS 5977-2: 1983 (BS EN 845-2: 2003).

Stainless steel

Grade 304 2b 1.4307 to BS EN 10088-2. Other grades available on request: contact manufacturer.

Length

As drawing

As schedule

Product Options

Length (manufactured in 150 mm increments):

  • BOX/K-75: 600–1800 mm.
  • BOX/K-100: 600–4800 mm.
  • BOX/K-150: 600–4800 mm.
  • BOX/K-200: 600–4800 mm.
  • HD BOX/K-100: 600–2700 mm.
  • HD BOX/K-150: 600–2700 mm.
  • HD BOX/K-200: 600–2700 mm.

Technical characteristics:

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

Third party certifications

  • British Board of Agrément (BBA) - certficate

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