General Guidelines for LED High Bay Lumen Output Based on Mounting Height:

1. For Mounting Heights of 15–20 feet (4.5–6 meters):

• Lumen Output: 15,000–20,000 lumens per fixture
• Use Case: Ideal for standard warehouses, gymnasiums, and large retail spaces with lower ceilings. This output ensures adequate brightness without excessive glare and provides good overall coverage.

2. For Mounting Heights of 20–30 feet (6–9 meters):

• Lumen Output: 20,000–30,000 lumens per fixture
• Use Case: Suitable for medium-sized warehouses, manufacturing areas, or large retail environments with higher ceilings. The extra lumen output compensates for the increased height, ensuring sufficient light intensity and uniform distribution.

3. For Mounting Heights of 30–40 feet (9–12 meters):

• Lumen Output: 30,000–50,000 lumens per fixture
• Use Case: This range is typically used for high-ceiling environments such as large warehouses, factories, airports, or gymnasiums. High lumen outputs help overcome the increased distance from the light source to the work surface.

4. For Mounting Heights of 40–50 feet (12–15 meters):

• Lumen Output: 50,000–70,000 lumens per fixture
• Use Case: Ideal for very large industrial spaces, auditoriums, or arenas. At these heights, more powerful lighting is necessary to maintain adequate illumination at ground level.

5. For Mounting Heights Above 50 feet (15 meters and higher):

• Lumen Output: 70,000–100,000+ lumens per fixture
• Use Case: Used in very high-ceiling environments such as large warehouses, sports arenas, or large manufacturing facilities. This high lumen output ensures ample coverage for vast spaces.

Additional Considerations:

• Beam Angle: Choose a beam angle based on the application. For example, narrower beam angles (e.g., 60° or 90°) are suitable for high-ceiling applications, while wider beam angles (e.g., 120° or 150°) are better for covering more extensive floor areas.
• Lighting Uniformity: Ensure that the lights provide even illumination throughout the area to prevent dark spots or overly bright areas.
• Application Requirements: Consider the level of brightness required for the task. Some environments (like assembly lines or warehouses with small work areas) may require more focused or task-specific lighting, while others may need more general illumination.

Example Scenarios:

• Warehouse (15–20 ft height): Around 15,000–20,000 lumens per fixture should be sufficient.
• Gymnasium (20–30 ft height): Around 25,000–35,000 lumens per fixture would be appropriate for even coverage and proper visibility.
• Manufacturing Facility (30–40 ft height): Around 30,000–50,000 lumens per fixture would be needed to provide adequate lighting over larger areas.

For optimal lighting, it's always a good idea to calculate the specific lighting requirements based on the size of the space, the desired lighting levels (measured in lux or foot-candles), and the type of work being performed in the area.