Need Help Or Advice? Call us Mon - Fri 9am - 5pm on 020 8643 9084


£19.95 ex VAT

  • Availability – In Stock
  • Lamp – GPH436T5L/4
  • Application – Air and Water Disinfection
  • Length – 436 mm
  • Power – 21 watts
  • Base – 4 pins
  • Our ultraviolet lamps offer maximum security of disinfection and a long and reliable lifetime (9000 hours). They are are an effective and environmentally friendly method of disinfection without chemicals.
Quantity discounts
1-5 £19.95
6-10 £19.45
11+ £18.95


The GPH436T5L/4 is a ultraviolet or germicidal lamp. They are used in air purification and water disinfection systems.

This lamp fits into many different uv systems including :

  • Daro Saphir 2
  • Sita 405
  • Watts WUV6-230

We recommend replacing your lamp after 9000 hours or 12 months of continuous service. After this, the amount of useful uv-c light emitted will diminish and hence reduce the effectiveness of your uv system.

Also known as :

  • GPH436T5L/4 HA
  • GPH436T5L/4 LT
  • GPH436T5L/LS/21W

The lamp description will be either printed or etched on the glass near the cap / base.

We can also supply a UV Lamp Ballast for this lamp. Please see below.

You may also like…

COVID-19 Message

Due to COVID-19 working restrictions the business is operating at reduced capacity with a skeleton staff across the sales department, working - Monday to Friday 8.00am - 4.00pm.

All Online Orders will be processed and despatched via Fedex. We will do our utmost to deliver your order in 1 - 2 days but please bear with us during these uncertain times.

Our Trade Counter is closed for Click and Collect.

You have Successfully Subscribed!

Pin It on Pinterest