Cutting edge in every sense and perfect in any workspace, large or small, commercial or educational. Its unique tri-optic LED technology delivers excellent efficiency and outstanding glare compliance, while its distinctive lines can inspire the most visually pleasing interior designs. 


  • Low Output
    • 1200mm*, 2800 lumens (24W)
    • 1500mm*, 3500 lumens (29W)
    • 1800mm*, 4200 lumens (35W)
  • High output
    • 1200mm*, 3800 lumens (32W)
    • 1500mm*, 4750 lumens (40W)
    • 1800mm*, 5700 lumens (48W)
  • Emergency Output (BLF):
    • All variants - 378 Lumens
  • Tri-optic technology with full face polycarbonate front diffuser and centrally located recessed pod
  • Luminaires can be connected continually without infills for a seamless aesthetic
  • LED chips are densely distributed within the central pod to maximise lumen output
  • LED chips are spaced further apart within the polycarbonate diffuser for excellent uniformity, visual comfort and surface luminance
  • Two light distribution ratios
    • 70% downlight and 30% uplight
    • 90% downlight and 10% uplight
  • 4000K ‘cool’ white LEDs

*Lengths shown are nominal. Please refer to the dimensions section for accurate product dimensions.


  • Slim extruded aluminium body finished in textured silver or white
  • IP40
  • For standalone or continuous installation (with or without infills)
  • Through wiring as standard on continuous luminaires
  • Mounting using architectural wire suspension kit (1.5m or 3m drop)
  • One suspension kit is needed per luminaire
  • One suspension kit is needed for 1200mm and 1500mm infills and any size of infill that is used to end a continuous run
  • Optional integral Command 4 detector mounted in the last cell at the end of the product for standalone luminaires (not available on continuous luminaires)
  • Optional integral COMD1 detector mounted in the last cell at the end of the product
  • Die cast aluminium end caps (supplied separately)
  • Infills available in increments of 300mm up to 1500mm
  • RAL Colour: Silver RAL9006. White RAL9003.
  • Choice of 3hr Emergency or COMEPS emergency options (COMEPS can be wired as Easytest if required)

Note: Integral detectors require commissioning. Please contact Whitecroft Technical Desk

Light output ratio 90% down 10% up, Low output

Light output ratio 90% down 10% up, Low output DALI 3hr Emergency LL/CW L70 B50
1200mm, 2800 lumens (24W) LN12Y91W LN12Y91WEM ECA 112 >100k >100k 82k
1500mm, 3500 lumens (29W) LN15Y91W LN15Y91WEM ECA 109 >100k >100k 82k
1800mm, 4200 lumens (35W) LN18Y91W LN18Y91WEM ECA 111 >100k >100k 82k

Light output ratio 90% down 10% up, High output

Light output ratio 90% down 10% up, High output DALI 3hr Emergency LL/CW L70 B50
1200mm, 3800 lumens (32W) LN12Y92W LN12Y92WEM ECA 110 >100k >100k 82k
1500mm, 4750 lumens (40W) LN15Y92W LN15Y92WEM ECA 109 >100k >100k 82k
1800mm, 5700 lumens (48W) LN18Y92W LN18Y92WEM ECA 109 >100k >100k 82k


Suspension kit, up to 1.5m drop ** LNSUSKIT1
Suspension kit, up to 3m drop ** LNSUSKIT3
Continuous mount kit LNCMOKIT
End cap kit, white* LNECW
300mm infill, white LN3INFW
600mm infill, white LN6INFW
900mm infill, white LN9INFW
1200mm infill, white LN12INFW
1500mm infill, white LN15INFW

* End cap kit consists of a pair of end caps
** One suspension kit per luminaire, one for every 1200mm and 1500mm infill and one for any size of infill that is used to end a continuous run


70/30 LIGHT DISTRIBUTION Replace 9 with 7 i.e LN12Y71W
COM4 (standalone only) Add Q4 before Y i.e LN12Q4Y91W
COMD1 Add Q1 before Y i.e LNSUSKITQ11
COMEPS Add suffix EP i.e LN12Y91WEP
SILVER FINISH Replace W with S i.e LN12Y91S
Dimensions Diagram 1
1200mm Continuous 1206 232 71 4.2 4.6
1500mm Continuous 1507 232 71 5.4 5.8
1800mm Continuous 1807 232 71 6.2 6.6
End Caps 14 232 71 0.2 0.2

Photometic Performance

Photometic Performance Diagram - High Output 4750 Lumens, 40W
High Output 4750 Lumens, 40W
LOR = 100.0%
SHR MAX = 1.54
Photometic Performance Diagram - Low Output 2800 Lumens, 23W
Low Output 2800 Lumens, 23W
LOR = 100.0%
SHR MAX = 1.49

LED Performance

Colour Temp RA (CRI) Colour consistency
4000K >80 MacAdam 3 SDCM

Tri-optic suspended architectural LED luminaire with direct: indirect lighting ratio of 70:30 or 90:10, incorporating intermediate brightness zone to diffuse light and graduate brightness with full face polycarbonate diffuser and recessed central metalised pod for maximum glare control and performance. Luminaires can be connected continually with or without infills for a seamless aesthetic – as Whitecroft Lighting LANCE.

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At Whitecroft, we have developed the Whitecroft Lighting Academy, a structured learning programme that will allow us to develop our future leaders, and ensure all of our staff have access to the best professional development opportunities available in our industry.

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At Whitecroft, our BIM engineers are not only adept at using Autodesk Revit; they are also fully trained lighting designers. We believe this is essential. When you use our teams on your project, you can rest assured the whole lighting solution is being designed, assessed and managed by people who know the technology inside out and have a full understanding of your requirements.

- We can populate your BIM model with a full lighting design.

- All our BIM families are created in-house, so if bespoke models are required, we can deliver them.

- We use Relux to create design validation data that confirms your project’s compliance and supports your BIM model.

- Once the model is complete, we work with you to interrogate every element including quantity schedules, costs, energy validation, COBie data and delivery schedules.

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Whitecroft have become successful in the lighting market, with focus on various sector specialisms. We now have extended our skills by offering a fully managed service which supplies much more than just the luminaires.

Project Management skills have been developed to save time on a project by planning it out and considering all relevant factors which may affect its outcome.

From design to specification, through to product selection, commissioning and after-sales support, we can help our customers meet the cost challenges of the commercial environment.

Our Project Management services encourage a smooth transition throughout your lighting procurement, manufacture, delivery and installation, by providing advice on the best techniques to employ.


Whitecroft Lighting continuously strives to offer customers the best service in the industry. This covers all aspects of our service from lighting design and quotations, to ensuring on-time deliveries and providing dedicated project management.

Whitecroft Lighting operates in a sustainable way by creating lighting solutions best adapted to customer requirements, with the least possible impact on the environment including consumption of natural resources. Whitecroft Lighting contributes to and takes responsibility for the furtherment of sustainability, which it also requires of all suppliers in it’s chain.

Through our environmental management system we are continually reducing our use of natural resources, whilst optimising recycled materials, avoiding waste generation and increasing recycling. As a responsible manufacturer we carry our company values and policies into our supply chain so that our customers can have confidence in the fact that all our lighting solutions are manufactured using only environmentally safe materials and processes.