GGJIA / LIGHTING JOURNAL

What is the panel light?

Published By ArlenConanReading time 1 min Back to articles
GGJIA led panel light

What is a flat panel light?

 A flat panel light is a ceiling light that can be round or square in shape. They produce bright illumination through light-emitting diodes (LEDs). Flat panel lights can be installed in a recessed, surface-mounted or suspended manner on the ceiling.

Comparison of Basic Parameters

Size Watt Area (square feet) Power density (W/sq ft) Efficiency Dimension Certification
1ft×4ft 40W 4 10W/ft² 130 LPW 303x1213x35mm ETL/cETL/FCC/CE/RoHS approval
2ft×2ft 40W 4 10W/ft² 130 LPW 603x603x35mm ETL/cETL/FCC/CE/RoHS approval
2ft×4ft 72W 8 9W/ft² 130 LPW 603x1213x35mm ETL/cETL/FCC/CE/RoHS approval

 

Application scenario analysis

  • 1ft × 4ft 40W: 
    • Advantages: Narrow and long design, suitable for linear arrangement (such as office partitions, supermarket shelf lighting).
    • Disadvantages: Limited coverage area, requires multiple units to be used together.
  • 2ft × 2ft 40W: 
    • Advantages: Square design, compatible with standard ceiling grids (such as meeting rooms, classrooms).
    • Disadvantages: Poor matching with long-shaped spaces.
  • 2ft × 4ft 72W: 
    • Advantages: High energy efficiency, large coverage area per lamp, reduces the number of installations (such as in warehouses, open-plan offices).
    • Disadvantages: Higher power consumption, need to confirm the circuit's load capacity.

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