Neutral White | 3500K | 21W | GR10Q-4 | 10,000 Hr Life

The CF21SQ / 835 / 4P / ECO (D) is a compact 2D-shaped fluorescent lamp designed to deliver high-efficiency lighting in tight spaces. It features a 21-watt output, 3500K neutral white color temperature, and a GR10Q-4 4-pin base. Its flat T4 tube configuration provides even illumination and a slim profile, making it a versatile choice for low-profile fixtures in residential and commercial settings.

Specifications

• Electrical & Performance

  • Wattage: 21W

  • Rated Life: 10,000 Hours

  • Color Temperature: 3500K (Neutral White)

  • CRI: 82

  • Start Method: Instant Start

  • Base Type: GR10Q-4 (4-Pin)

• Physical Characteristics

  • Shape: 2D – T4

  • Length: 5.3" (134.62 mm)

  • Width: 5.2" (132.08 mm)

  • Height: 1" (25.40 mm)
    

Applications:
Well-suited for ceiling and wall-mounted fixtures in hallways, utility rooms, healthcare, retail, and commercial buildings, this lamp offers reliable, space-saving lighting with energy efficiency and instant start performance.