We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Box of fifteen U-bend T8 fluorescent tubes, 22.5 inches, 3000K

GE

GE 72117 F31T8/SPX30/U/ECO U-bend 31W T8 fluorescent tube 3000K pack of 15

SKU CH-MA2T-RAV4P

A 15-pack of 31-watt T8 U-bend fluorescent tubes with a medium bi-pin base, 3000K colour temperature and 22.5-inch length

  • Product typeFluorescent Tubes
  • Pack of 15 tubes simplifies group relamping
  • 31 W T8 lamps deliver 3000 K natural white light
  • U-bend design fits 22.5 inch recessed fixtures
  • Medium bi-pin G13 base ensures standard socket compatibility
  • Ecolux Mod-U-Line construction reduces mercury content

GE 72117 U-bend fluorescent tube

The GE 72117 is a 31 watt T8 U-bend fluorescent tube with a medium bi-pin G13 base. It produces a 3000K natural white colour temperature and comes in a case of 15 lamps. The Ecolux design indicates reduced mercury content for easier disposal. Each tube measures 22.5 inches in length.

Sustained output stability

Fluorescent tubes reach full brightness after a short warm-up period and then maintain a steady lumen output for the majority of their rated life. Unlike some discharge lamps that fade quickly, the SPX30 phosphor blend is engineered for consistent colour rendering over extended burning hours. This makes the lamps suitable for fixtures that remain illuminated for long shifts. Performance remains uniform across the pack when operated on compatible ballasts.

Replaces standard 31 watt U-bend T8 lamps

This pack directly replaces existing F31T8 U-bend tubes of the same wattage, length and G13 base configuration. The upgrade is worthwhile when a facility requires the improved colour quality of the 3000K SPX30 phosphor or the lower mercury Ecolux construction. It is not a substitute for straight T8 tubes, T5 diameters, LED retrofit kits or any fixture requiring a different pin spacing or voltage.

How it compares

Measured against everything we stock in Lighting Fixtures & Bulbs, at today’s prices. Recalculated every night.

Price $67.99
Pricier than about 82% of the 491 comparable items (median $28.99).

Specifications

Product
Brand nameGE Lighting
Product typeFluorescent Tubes

Questions about this item

How much heat does a 31 watt T8 U-bend tube add to a ceiling fixture that runs all day?

Each 31 watt tube converts most of its input power into heat, so a continuous run will raise the fixture temperature noticeably; allow ventilation space above the fitting.

What ballast and fixture does the medium bi-pin G13 base require?

The tubes need a T8 electronic or magnetic ballast rated for 31 watts and a U-bend fixture with G13 lampholders spaced for 22.5 inch lamps.

Will these 3000K U-bend tubes match the colour of older 3000K T8 lamps already in the same fitting?

Yes, the 3000K SPX30 phosphor is designed to match existing 3000K T8 tubes, so mixed installations appear uniform.

More in Lighting Fixtures & Bulbs

Similar items