GE Linear Cool White Medium Bi-pin (T12) Fluorescent Light Bulb (30-Pack) - 71223265

• Uses 40 Watts (2600 lumens)

• 4100 Kelvin cool white light

• Rated to last 18 years based on three hours per day use

• 30 LFL tubes per package

• 89 color rendering index

• 48-inch T12 (1-1/2 inch diameter)

• Medium bi-pin base type (G13)

• Perfect for garage, basements, warehouses and industrial buildings

What our Experts Think

• High-Output Commercial Lighting Solution
  30-pack of T12 linear fluorescent tubes designed for large-scale lighting setups like garages, warehouses, basements, and utility spaces.
• Cool White 4100K Illumination
  Produces a bright, neutral cool white light that improves visibility and reduces eye strain in work environments.
• Efficient 40W Standard Performance
  Each tube delivers consistent lumen output for reliable general-purpose lighting in long fixtures.
• Medium Bi-Pin (G13) Compatibility
  Fits standard 48-inch T12 fixtures, making it a direct replacement for existing fluorescent systems without modification.
• Long-Life Design for Bulk Use
  Built for extended operating life, reducing maintenance frequency in commercial or multi-fixture installations.
• Ideal for Institutional & Industrial Use
  Commonly used in parking areas, workshops, storage rooms, and commercial buildings where uniform lighting is required.
• Cost-Effective 30-Pack Supply
  Bulk packaging helps lower per-unit replacement cost and streamline large-scale maintenance projects.

Q&A

Maintenance Tips

• Replace in pairs or full rows: For best performance, install bulbs in sets to prevent flickering caused by aging ballasts.
• Check fixture ballast regularly: Weak or failing magnetic/electronic ballasts are the most common cause of dim or flickering T12 tubes.
• Keep fixtures clean: Dust buildup on reflectors and tubes reduces light output—wipe gently with a dry cloth when powered off.
• Avoid frequent switching: Excessive on/off cycling can shorten fluorescent lamp lifespan and increase start-up stress.
• Ensure proper seating: Make sure medium bi-pin (G13) ends are fully locked into sockets to prevent intermittent lighting.
• Monitor flicker or delay start: Persistent flickering after warm-up may indicate aging bulbs or ballast failure.
• Dispose properly: Fluorescent tubes contain trace mercury—recycle at approved hazardous waste or lighting return centers.
• Use compatible fixtures only: Designed for T12 linear fixtures in garages, basements, warehouses, and commercial lighting systems.
• Avoid mixing old and new tubes: Mixing can cause uneven brightness and reduce overall efficiency of the fixture.