Solid Wall & Box Lintels

KEYSTONE S/W STD LINTEL INT/K-75 1200mm KIN7512

Part number U0007166

Manf # KIN7512

£20.30 inc VAT

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KEYSTONE S/W STD LINTEL INT/K-100 1200mm KIN112

Part number U0007167

Manf # KIN112

£22.50 inc VAT

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Birtley Steel Lintel MBL 750mm

Part number U0125126

Manf # MBL-0750

£30.83 inc VAT

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Birtley Steel Lintel LA 900mm

Part number U0125083

Manf # LA-0900

£56.63 inc VAT

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Birtley Lintel SB100 900mm

Part number U0125269

Manf # SB100-0900

£67.54 inc VAT

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Birtley Steel Lintel LA 1200mm

Part number U0125087

Manf # LA-1200

£76.69 inc VAT

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KEYSTONE BOX/K-150 STEEL BOX LINTEL 900 x 150mm HIGH KBX1509

Part number U0007154

Manf # KBX1509

£76.82 inc VAT

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Birtley Lintel SB100 1050mm

Part number U0125270

Manf # SB100-1050

£80.05 inc VAT

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KEYSTONE BOX/K-75 STEEL BOX LINTEL 1500 x 75mm HIGH KBX7515

Part number U0007127

Manf # KBX7515

£80.59 inc VAT

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Keystone Lintel BOX/K-100 1200mm

Part number U0007129

Manf # KBX112

£88.18 inc VAT

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Birtley Steel Lintel SB100 1200mm

Part number U0125271

Manf # SB100-1200

£88.91 inc VAT

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Birtley Steel Lintel LA 1350mm

Part number U0125089

Manf # LA-1350

£89.29 inc VAT

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Birtley Steel Lintel LA 1500mm

Part number U0125090

Manf # LA-1500

£98.83 inc VAT

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Keystone Lintel BOX/K-100 1350mm

Part number U0127417

Manf # KBX1135

£99.59 inc VAT

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KEYSTONE BOX/K-150 STEEL BOX LINTEL 1200 x 150mm HIGH KBX1512

Part number U0007147

Manf # KBX1512

£102.10 inc VAT

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Birtley Steel Lintel SB100 1350mm

Part number U0125272

Manf # SB100-1350

£103.81 inc VAT

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Birtley Steel Lintel SB100 1500mm

Part number U0125273

Manf # SB100-1500

£111.40 inc VAT

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Birtley Steel Lintel LA 1650mm

Part number U0125093

Manf # LA-1650

£114.34 inc VAT

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Keystone Lintel BOX/K-100 1500mm

Part number U0007130

Manf # KBX115

£114.36 inc VAT

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Birtley Lintel SBL200 900mm

Part number U0125395

Manf # SBL200-0900

£116.99 inc VAT

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KEYSTONE S/W H/D BOX LINTEL HDBOX/K-100 1200mm KHBX112

Part number U0007141

Manf # KHBX112

£120.59 inc VAT

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Birtley Steel Lintel LA 1800mm

Part number U0125095

Manf # LA-1800

£124.66 inc VAT

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KEYSTONE BOX/K-150 STEEL BOX LINTEL 1500 x 150mm HIGH KBX1515

Part number U0007148

Manf # KBX1515

£127.49 inc VAT

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Birtley Lintel SBL200 1050mm

Part number U0125396

Manf # SBL200-1050

£131.72 inc VAT

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Keystone Lintel BOX/K-100 1800mm

Part number U0007131

Manf # KBX118

£139.76 inc VAT

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KEYSTONE S/W H/D BOX LINTEL HDBOX/K-100 1500mm KHBX115

Part number U0007142

Manf # KHBX115

£149.58 inc VAT

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Birtley Steel Lintel SBL200 1200mm

Part number U0125397

Manf # SBL200-1200

£153.43 inc VAT

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KEYSTONE BOX/K-150 STEEL BOX LINTEL 1800 x 150mm HIGH KBX1518

Part number U0007149

Manf # KBX1518

£153.92 inc VAT

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Birtley Steel Lintel LA 2100mm

Part number U0125100

Manf # LA-2100

£158.56 inc VAT

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Birtley Steel Lintel SB100 1800mm

Part number U0125275

Manf # SB100-1800

£159.11 inc VAT

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Keystone Lintel BOX/K-100 2100mm

Part number U0007132

Manf # KBX121

£165.16 inc VAT

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Keystone Lintel SB/K 2400mm

Part number U0007110

Manf # KSB24

£170.40 inc VAT

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Birtley Steel Lintel LA 2400mm

Part number U0125103

Manf # LA-2400

£187.04 inc VAT

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Birtley Steel Lintel SB100 2100mm

Part number U0125277

Manf # SB100-2100

£192.25 inc VAT

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Birtley Steel Lintel SBL200 1500mm

Part number U0125399

Manf # SBL200-1500

£195.92 inc VAT

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Keystone Lintel BOX/K-100 2400mm

Part number U0007133

Manf # KBX124

£196.74 inc VAT

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KEYSTONE BOX/K-150 STEEL BOX LINTEL 2100 x 150mm HIGH KBX1521

Part number U0007150

Manf # KBX1521

£196.80 inc VAT

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KEYSTONE S/W H/D BOX LINTEL HDBOX/K-100 1800mm KHBX118

Part number U0007143

Manf # KHBX118

£215.89 inc VAT

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Keystone Lintel BOX/K-100 2700mm

Part number U0007134

Manf # KBX127

£222.26 inc VAT

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Birtley Steel Lintel SB100 2400mm

Part number U0125279

Manf # SB100-2400

£222.90 inc VAT

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KEYSTONE BOX/K-150 STEEL BOX LINTEL 2400 x 150mm HIGH KBX1524

Part number U0007151

Manf # KBX1524

£224.56 inc VAT

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Birtley Steel Lintel LA 2700mm

Part number U0125107

Manf # LA-2700

£239.36 inc VAT

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Birtley Steel Lintel SBL200 1800mm

Part number U0125400

Manf # SBL200-1800

£242.53 inc VAT

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KEYSTONE S/W H/D BOX LINTEL HDBOX/K-100 2100mm KHBX121

Part number U0007144

Manf # KHBX121

£254.40 inc VAT

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Birtley Steel Lintel SB100 2700mm

Part number U0125281

Manf # SB100-2700

£255.59 inc VAT

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Keystone Lintel BOX/K-200 2100mm

Part number U0007158

Manf # KBX221

£258.22 inc VAT

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KEYSTONE BOX/K-150 STEEL BOX LINTEL 2700 x 150mm HIGH KBX1527

Part number U0007152

Manf # KBX1527

£264.92 inc VAT

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Birtley Steel Lintel SBL200 2100mm

Part number U0125402

Manf # SBL200-2100

£283.87 inc VAT

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KEYSTONE S/W H/D BOX LINTEL HDBOX/K-100 2400mm KHBX124

Part number U0007145

Manf # KHBX124

£291.17 inc VAT

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KEYSTONE S/W H/D BOX LINTEL HDBOX/K-100 2700mm KHBX127

Part number U0007146

Manf # KHBX127

£327.58 inc VAT

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Keystone Lintel BOX/K-200 2700mm

Part number U0007160

Manf # KBX227

£332.92 inc VAT

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Birtley Steel Lintel SBL200 2400mm

Part number U0125403

Manf # SBL200-2400

£341.92 inc VAT

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Keystone Lintel BOX/K-100 3000mm

Part number U0007135

Manf # KBX13

£359.42 inc VAT

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Birtley Steel Lintel SBL200 2700mm

Part number U0125405

Manf # SBL200-2700

£399.32 inc VAT

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Birtley Steel Lintel SB100 3000mm

Part number U0125282

Manf # SB100-3000

£412.44 inc VAT

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KEYSTONE BOX/K-150 STEEL BOX LINTEL 3000 x 215mm HIGH KBX153

Part number U0007153

Manf # KBX153

£417.11 inc VAT

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Keystone Lintel BOX/K-100 3600mm

Part number U0007137

Manf # KBX136

£431.88 inc VAT

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Birtley Steel Lintel SB100 3600mm

Part number U0125284

Manf # SB100-3600

£499.92 inc VAT

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Keystone Lintel BOX/K-200 3000mm

Part number U0007161

Manf # KBX23

£517.67 inc VAT

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KEYSTONE BOX/K-100 STEEL BOX LINTEL 4200 x 215mm HIGH KBX142

Part number U0007139

Manf # KBX142

£589.97 inc VAT

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Birtley Lintel SBL200 3300mm

Part number U0125408

Manf # SBL200-3300

£615.44 inc VAT

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KEYSTONE BOX/K-100 STEEL BOX LINTEL 4800 x 215mm HIGH KBX148

Part number U0007140

Manf # KBX148

£749.42 inc VAT

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KEYSTONE BOX/K-200 STEEL BOX LINTEL 4200 x 215mm HIGH KBX242

Part number U0007164

Manf # KBX242

£783.98 inc VAT

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Birtley Steel Lintel SBL200 4800mm

Part number U0125413

Manf # SBL200-4800

£1,085.50 inc VAT

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Solid Wall & Box Lintels

Solid wall lintels and box lintels can be used for internal and external construction.

Box lintels can be used as a lintel for solid wall externally due to being manufactured from galvanised steel and with powder coating for extra protection. This protects from premature rust and corrosion. Most box lintels also have perforations along the length acting as a plaster key and can be insulated if required. The box design saves on insulation and brickwork. It is also designed to carry a full load of wet masonry as soon as it is installed but must have a minimum end bearing of 150mm each side of the opening and be bedded on mortar with all perpendicular joints filled with mortar.

Box lintels are available in two options, with box lintel sizes to support 100mm wide walls with lengths from 1200mm to 3600mm and 200-215mm wide walls with lengths from 1200mm to 4800mm.

We work with Keystone to provide Keystone box lintels and with Birtley to provide Birtley steel lintels.
For your other projects please view our lintels for cavity walls. You can also view our range of lintels for eaves and our range of concrete lintels.

For more information on our lintels please check our how to guide. However, before ordering a lintel, it is essential that you speak with the project’s structural engineer to advise on the correct lintel for the job.