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Philips F21T5/841 ALTO - 230839

Lamp F21T5/841 ALTO
Description 21W Mini 2-Pin (G5) T5 High Efficiency
Brand Philips
MPN 230839


Discontinued Product
57 In Stock

In Stock

The F21T5/841 ALTO Philips 23083-9 is a Fluorescent T5 21W Lamp with a G5 base.
Specifications for the 230839 Philips F21T5/841 ALTO Replacement Lamp
Shape T5
Lamp Base G5 (Miniature 2-Pin)
Bulb Finish White
Rated Life 25000 hours
Initial Lumens 2100
Color Temperature 4100 K
Color Rendering Index (CRI) 85
Watts 21 W
Maximum Overall Length - MOL 34.00in (864.00mm)
Product Code 230839
Family Name Philips T5 Fluoresent Lamps
Description F21T5/841 ALTO
SKU Qty 1
Case Qty (Price Listed is Per Bulb) 40
Sales Unit Each
Philips F21T5/841 ALTO 230839 Replacement Bulb Applications & Features


  • Philips F21T5 841 ALTO High Efficiency Lamp
  • Linear Fluorescent Tube
  • Programmed Start
F21T5/841 ALTO Philips Fluorescent Lamp
  • The F21T5/841 ALTO Philips fluorescent lamps operate at high surface temperatures that can cause serious physical injuries.
  • Turn power off and allow adequate time (approximately 10 minutes) for the Philips F21T5/841 ALTO lamp to cool before attempting replacement.
  • In order to avoid the risk of electrical shock, make sure the power to the fixture is turned off when replacing the F21T5/841 ALTO Philips.
  • The Philips F21T5/841 ALTO lamps are very fragile. Do not drop, crush, bend or shake them.
  • The F21T5/841 ALTO Philips fluorescent tubes may shatter with considerable force when broken.
  • To ensure that the Philips F21T5/841 ALTO lamps remain in the sockets for the duration of the operation, make sure that the fixture’s sockets are not worn prior to installation of the lamps.
  • If the F21T5/841 ALTO Philips lamps are installed in worn sockets, the lamps could fall out of the fixture during operation.
  • Never operate Philips F21T5/841 ALTO lamp above or below its rated current voltage.
  • Electrical connections should be clean and in good condition. Replace the F21T5/841 ALTO Philips lamp holders and sockets when needed.
  • Affix the Philips F21T5/841 ALTO lamp securely in the socket. Improper installations will cause electrical arcing, overheating and short life to the lamp and socket.
  • Do not look directly at the operating lamp for any period of time; this may cause serious eye injury.
  • F21T5/841 ALTO Philips fluorescent lamp use is not recommended in extreme weather conditions.
  • Excessive cold/warm temperatures dramatically affects the Philips F21T5/841 ALTO starting, lamp life and lumen maintenance.