A cost effective and highly efficient continuous trunking solution optimised for superior lighting quality.  Fewer installed points and through wiring allows for speedy installation times, compressing build schedules in both refurbishment and new-build projects.


  • Fixed polycarbonate diffuser delivering 360 degree illumination 
  • Wide distribution pattern ensures even illumination of all teaching surfaces in classrooms, including walls, whiteboards and desk surfaces
  • Highly efficient delivering > 140 ll/cw
  • Available with 3000K and 4000K LED
  • Nominal Outputs
    • 3800 lumens, 27W
    • 4300 lumens, 30W
    • 4750 lumens, 33W
    • 5300 lumens, 37W
  • Emergency Output
    • 512 lumens


  • Extruded aluminium universal trunking for surface or suspension mounting finished white RAL9003
  • 7 pole through wiring as standard, only one electrical connection required per run of luminaires
  • Quick connect system for simple and rapid installation and reduction in labour costs
  • Choice of 3hr Emergency or COMEPS emergency options
  • Trunking infills in either 500mm or 1000mm extend the continuous system
  • Trunking covers provide a neat finish and aesthetic 
    • 300mm cover required for luminaire to luminaire mounting
    • 800mm cover included with 500mm infill
    • 1300mm cover included with 1000mm infill  
  • Available with a choice of integral detectors to monitor ambient light levels as well as occupancy 
    • Organic Response® : Communicates with its neighbouring luminaires, automatically controlling light across the area†
    • COMD1: PIR and photocell for presence and light level detection
  • Note: for integral sensor options all luminaires to be controlled must be DALI

†Every luminaire within an area that’s to be controlled must have an integral Organic Response® detector.  Wall switch and dongle are also available (supplied separately).


Luminaire Fixed Output 3hr Emergency LL/CW L70 B50
3831 lumens (26.7W) INSPH24KW INSPH24KWEM ECA 143 >100k >100k >100k
4298 lumens (30W) INSPH34KW INSPH34KWEM ECA 143 >100k >100k >100k
4719 lumens (33W) INSPH44KW INSPH44KWEM ECA 143 >100k >100k >100k
5324 lumens (37.4W) INSPH54KW INSPH54KWEM ECA 142 >100k >100k >100k


Description Part Code
500mm infill with 800mm cover INSPINF500W
500mm infill with 800mm cover and COMD1 PIR * INSPINF500Q1W
1000mm infill with 1300MM cover INSPINF1000W
1000mm infill with 1300MM cover and COMD1 PIR * INSPINF1000Q1W
300mm mid row trunking cover INSPCOV300W
300mm mid row trunking cover with COMD1 PIR * INSPCOV300Q1W
Row termination kit cable entry side (includes end caps) ** INSPEDCABTERM
Row termination kit cable entry above (includes end caps) *** INSPABCABTERM
Organic Response Wall Switch (Classroom) ORGWPC
Organic Response Wall Switch (Standard) ORGWP
Organic Response Dongle ORGDNGLE
Surface Kit (1 Bracket) **** INSPSURKIT

Note: 300mm cover required for luminaire to luminaire mounting (one per join)

* Use in conjunction with DALI luminaires only
** Includes 150mm start row cover, 150mm end row cover and two end caps, order one kit per row
*** Includes 100mm above entry block, 250mm start row cover, 150mm end row cover and two end caps, order one kit per row
**** Two kits per start of row and one kit per luminaire or infill thereafter


COMEPS Add suffix EP i.e INSPH24KWEP
DALI DIMMING Replace H with Y i.e INSPY24KW

For 3000K colour temperature, please contact Whitecroft

Dimensions Diagram 1
Luminaire (all outputs) 2000 1700 128 166 8.0 8.5
Cable entry above block 100 - 61 41 0.2 -
Infill 500mm 500 800 61 41 1.5 -
Infill 1000mm 1000 1300 61 41 3.0 -
Trunking Cover 300mm 300 - 1 - 0.2 -

Photometic Performance

Photometic Performance Diagram - 4000K, 4719 lumens, 33W
4000K, 4719 lumens, 33W
LOR = 100.0%
SHR MAX = 1.81

Performance Guide

Performance Guide Diagram 1
  • Lamps:: 33W LED, 4719 lumens
  • Illuminance:: 329 lux
  • Spacing:: 4.0m x 2.0m

  • Maintenance:: 0.8
  • Reflectance:: 70/50/20
  • Ceiling Height:: 2.7m
  • Working plane:: 0.75m
  • Area:: 56m2

LED Performance

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

Surface mounted lighting trunking system with polycarbonate cylindrical diffuser delivering 360 degree illumination.  Quick connect system and through wiring for ease of installation, integral control options - as Whitecroft Lighting INSPIRATION SURFACE. 

Product Downloads

Select all
  • PDF Inspiration Surface Datasheet
  • PDF Education Brochure
  • PDF Installation Leaflet
  • ZIP Inspiration Surface - LDT
  • ZIP Inspiration Surface - Relux
  • ZIP Inspiration Surface - Dialux
  • ZIP Inspiration Surface - Revit
  • PDF Maintenance Factors

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.