Specifications and Features

1. Power and Lumen Output:
   • Select a fixture with appropriate wattage to ensure sufficient illumination at the given height. For instance, around 30W to 50W can be effective, but this depends on the lumen efficacy.
   • Look for fixtures that provide around 3000-5000 lumens, depending on the application (general lighting vs. task lighting).
2. Color Temperature:
   • 4000K (Neutral White): Good for general workspaces, providing a balanced light that is not too warm or too cool.
   • 5000K (Cool White): Ideal for workspaces requiring bright and clear lighting.
   • 6500K (Daylight): Suitable for areas needing very high visibility.
3. Beam Angle:
   • A wider beam angle (e.g., 120 degrees) is typically preferable for even distribution of light over large areas.
4. CRI (Color Rendering Index):
   • A higher CRI (80+) ensures better color representation, which is important for areas where accurate color perception is necessary.

Installation Considerations

1. Mounting Options:
   • Surface-Mounted: Directly attached to the ceiling. Suitable for spaces where ceiling height is limited.
   • Suspended: Hanging from the ceiling via cables or rods. Useful for higher ceilings to bring the light closer to the working plane.
2. Dimming Capability:
   • Consider fixtures with dimming capabilities for adjustable lighting levels, providing flexibility for different tasks or moods.
3. Energy Efficiency:
   • Look for energy-efficient fixtures with certifications like Energy Star or DLC to ensure cost savings and sustainability.
4. Durability and Maintenance:
   • Choose fixtures with a robust design, preferably with a good warranty period (e.g., 5 years).
   • Check for easy maintenance features, such as accessible drivers and replaceable parts.

Recommended Use Cases

1. Offices and Workspaces:
   • 4000K or 5000K color temperature with dimming capability for versatile lighting needs.
2. Retail and Commercial Spaces:
   • 4000K for a warm and inviting atmosphere, 5000K for clear product visibility.
3. Industrial and Workshop Areas:
   • 5000K or 6500K for high visibility and task efficiency.
4. Educational Institutions:
   • 4000K or 5000K for comfortable and effective learning environments.

Summary

For a height of 9-10 feet, a SQLED linear fixture with 30W to 50W power, a color temperature of 4000K to 5000K, wide beam angle, high CRI, and dimming capabilities would be optimal. Ensure the fixture is energy-efficient and durable for long-term use.