5ft Twin 58w HF Diffundi Fluorescent Fitting - Discontinued

Please try Enclosed Fluorescent Fittings for alternative products.

5ft Twin 58w HF Diffundi Fluorescent Fitting731987038691096204649

Two Year Guarantee

Energy Efficient Lighting
Complies with Part L1 of the new Building Regulations -
1st April 2002

Height: 71mm
Width: 145mm
Length: 1544mm
Thorn Diffundi
5ft Twin 58w HF Fluorescent Fitting
High performance surface mounted luminaire with curved aesthetic diffuser and low height slim design,
Body steel with white painted finish, opal polycarbonate diffuser and polycarbonate endcaps.

Suitable for Domestic and Commercial applications, such as offices, shops, kitchens
  • Benefits of High Frequency Fittings.
  • Flicker free and silent operation.
  • ‘Instant’ starting.
  • Detects failed lamps, no more flashing on and off.
  • Cold starting in sub-zero temperature.
  • No stroboscopic effects.
  • 20-30% saving in running costs.
  • Supplied Less Tubes
  • Features of Tri-phosphor Lamps.
  • Tri-phosphor lamps drop to 96% of their original output after about 4000 hours and remain at that level compared to standard lamps which drop to 86% and then down to 74% over the rest of their life.
  • Survival rate of 70% of tri-phosphor tubes after 16,000 hours, compared to 10,000 hours for standard tubes.
  • Approximately 15% increase in light output over standard tubes.


High Frequency Info - 49Kb pdf HF Benefits - 87kb pdf Diffundi Instructions - pdf 160Kb
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Price (ex VAT)
Price (inc VAT)
product photo

TN D258

5ft Twin 58w HF Diffundi Fluorescent Fitting Clearance + Fragile


EA 3+




EA 3+