Whether you’re a contractor comparing options or a facility manager planning an upgrade, this guide will help you understand what the numbers really mean — and why they matter on the job.
CRI (Color Rendering Index)
What it means: How accurately a light source shows colors compared to natural daylight.
Why it matters: A CRI of 84–85, like the RBAY22, is solid for commercial and industrial spaces where color accuracy matters but perfection isn’t mission-critical.
Pro Tip from the PROLIGHTING team: Use 90+ CRI for spaces where you want products or details to look their best — like retail floors or inspection areas.
Power Factor
What it means: How efficiently the fixture uses power. The closer to 1.0, the better.
RBAY22 Example: 0.95–0.99 — extremely efficient.
Why it matters: High power factor means less strain on your electrical system and fewer surprises when the utility bill shows up.
Beam Angle
What it means: How wide the light spreads from the fixture.
Selectable in RBAY22: 55°, 85°, or 105°.
Why it matters:
- 55°: Tight beam, best for ceilings 25 ft and up.
- 85°: A workhorse setting for most warehouses.
- 105°: Great for wide-open areas or lower ceilings.
Field Insight: Match your beam angle to your racking layout: narrow for aisles, wide for open floor plans.
Lumen Output (Brightness)
What it means: Total light produced — more lumens = more brightness.
RBAY22 Range: From ~15,000 to ~48,000 lumens depending on settings.
Why it matters: Underpowered lights make your space feel like a cave. Overpowered? You’re just lighting your electric bill. Get the lumen output right for your ceiling height and room purpose.
Lumens per Watt (Efficacy)
What it means: Energy efficiency — how much light you get per watt used.
RBAY22 Range: 140–165 lm/W — very efficient.
Why it matters: High efficacy helps meet energy codes, qualify for rebates, and cut operating costs without compromising visibility.
CCT (Correlated Color Temperature)
What it means: Color tone of the light — measured in Kelvin.
RBAY22 Settings: 3500K (neutral), 4000K (cool), 5000K (daylight).
Why it matters:
- 3500K: Soft, easy on the eyes
- 4000K: Clean, professional, ideal for task areas
- 5000K: Crisp daylight, boosts visibility in big or dark spaces
Field Insight: We typically recommend 4000K for most warehouse and industrial installs. It’s the Goldilocks zone.
Voltage Compatibility
RBAY22: Works with 120–277V or 480V circuits.
Why it matters: Don’t assume — double-check your facility’s electrical setup before ordering.
Impact & Water Ratings (IK10 + IP69K)
What it means:
- IK10: Built to take a hit
- IP69K: Dustproof and pressure-washer tough
Why it matters: If you’re dealing with forklifts, dust, or washdown conditions, this fixture’s built for it.
Wattage & CCT Selectability
What it means: This fixture adapts to your space — no need to pre-pick the exact specs.
RBAY22 Options:
- Wattage: 160/130/100W (and others depending on model)
- CCT: 3500K / 4000K / 5000K
Why it matters: More flexibility during install. Less guessing, less waste.
Bonus: Dimming, Mounting, Controls
- 0-10V dimming built-in (great for energy management)
- Comes standard with V-hooks + chains
- Fully compatible with Lightcloud Blue for smart control and motion sensing
Pro Tip: Pair it with Lightcloud Blue if you want easy scheduling, daylight sensing, or remote control.
Final Word
Understanding how to read a spec sheet turns a good lighting choice into a great one. It means you’re not just comparing prices — you’re comparing performance, efficiency, and flexibility that directly impact your project.
If you’re still unsure about what these numbers mean for your application, our team at PROLIGHTING is here to help.
Explore RBAY22 High Bay Fixtures or contact us for a personalized recommendation.
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