Description
The G E LIGHTING 66650 is a 40-watt T12 fluorescent tube designed for general utility lighting in commercial and industrial environments. This Cool White lamp produces 4,100 Kelvin color temperature and delivers 1,800 lumens of output, making it a reliable choice for warehouses, workshops, garages, and utility spaces. The tube measures 48 inches in length with a 1.5-inch diameter and uses a standard Medium Bi-Pin base for broad fixture compatibility. With a rated life of 15,000 hours and a Color Rendering Index of 87, this lamp balances longevity with accurate color rendering for work environments where visibility matters. Licensed electricians and facility maintenance personnel are the typical installers.
This T12 fluorescent tube is suited for residential utility spaces, commercial facilities, and light industrial applications where standard 48-inch fluorescent fixtures are in service. Typical installation scenarios include strip lights, shop lights, wraparound fixtures, and surface-mounted utility troffers commonly found in basements, garages, storage areas, and back-of-house commercial spaces. This lamp is sold in a package quantity of 30 units, making it practical for bulk replacement projects. No specific compatible fixture models were listed in the product data.
Key Features
- 40-watt T12 tube with 1,800 lumens output for consistent utility illumination
- 4,100 Kelvin Cool White color temperature reduces eye strain in work environments
- Color Rendering Index of 87 for accurate color visibility
- Rated 15,000-hour lamp life to reduce replacement frequency
- Medium Bi-Pin base fits standard 48-inch T12 fluorescent fixture sockets
- 48-inch length by 1.5-inch diameter standard T12 form factor
Compatibility
Designed as a direct replacement for standard 40-watt T12 fluorescent tubes in 48-inch residential, commercial, and light industrial fluorescent fixtures using a Medium Bi-Pin base.
Installation Notes
T12 fluorescent tubes are installed by electricians or qualified maintenance personnel. Always switch off power at the fixture and allow the existing lamp to cool before handling. Confirm the fixture ballast is rated for T12 lamps before installation, as T12 tubes are not compatible with T8-only electronic ballasts. Handle tubes carefully to avoid breakage, and dispose of spent fluorescent lamps in accordance with local regulations governing mercury-containing devices.
Technical Specifications
- Wattage: 40 watts
- Lamp Type: T12 Fluorescent Tube
- Color Temperature: 4,100 Kelvin
- Lumens: 1,800
- Color Rendering Index (CRI): 87
- Rated Lamp Life: 15,000 hours
- Length: 48 inches
- Diameter: 1.5 inches
- Base Type: Medium Bi-Pin
- Package Quantity: 30
- Weight: 10.7 pounds
Standard Information
- Brand: G E LIGHTING
- Manufacturer Part Number: 66650









