Product Description
Lithonia Lighting LDN4 ALO3-SWW1-MVOLT-UGZ-HSG is a 4" new-construction downlight housing with switchable lumens and CCT, multi-volt input, and 0–10V/120V phase dimming to 10%. This ALO3 housing delivers 2000/2500/3000 lumens with a 55° cutoff and is designed for covered-ceiling wet locations—ideal for professional, flexible lighting layouts.
Brand: Lithonia Lighting
Model: LDN4 ALO3-SWW1-MVOLT-UGZ-HSG (4" Round)
Lumen Switches: 2000 / 2500 / 3000 lm (ALO3)
CCT Switches: 3000K / 3500K / 4000K / 5000K (SWW1)
Voltage: MVOLT (120–277V)
Dimming: 0–10V & 120V phase to 10% (UGZ)
IC Rating: Non-IC for ALO3
Location Rating: Wet location (covered ceiling)
Lifetime: L80 @ 60,000 hours
Free shipping on orders over $250
Product Benefits
- One housing, many looks: switchable lumens and CCT reduce SKUs and simplify standardization across projects.
- Contractor-friendly install: vertically adjustable bar hangers, torsion-spring trim retention, and access from above or below the ceiling.
- Controls-ready: native 0–10V plus 120V phase dimming to 10% fits common control schemes; optional nLight ecosystems available on the series.
- Code-conscious design: wet-location rating (covered ceiling) and ROHS-compliant drivers support commercial compliance needs.
Key Features
- Switchable Performance: 2000/2500/3000 lm via ALO3; SWW1 toggles 3000K–5000K.
- Optics: 55° cutoff for visual comfort and reduced glare.
- Driver: MVOLT (120–277V), UGZ universal dimming to 10% (0–10V & 120V phase).
- Construction: galvanized steel frame & junction box; passive thermal management.
- Ceiling Compatibility: 1/2"–1-1/2" thickness; accommodates 12"–24" joist spacing.
- Listings: Wet location (covered ceiling); wallwash trims damp only.
Specifications
| Technical Specs | |
|---|---|
| Series | LDN4 – 4" Round New Construction Downlight Housing |
| Model | ALO3-SWW1-MVOLT-UGZ-HSG (housing only; order trims separately) |
| IC Rating | Non-IC for ALO3 |
| Optical Cutoff | 55° cutoff to source and image |
| CRI | 80 CRI standard (90 CRI optional on series) |
| Listings | Wet location (covered ceiling); wallwash trims damp |
| Lumen Maintenance | L80 @ 60,000 hours |
| Physical Specs | |
|---|---|
| Aperture | Ø 4-5/16" |
| Ceiling Cutout | Ø 5-1/8" (self-flanged trims); Ø 5-1/4" (flangeless) |
| Ceiling Thickness | 1/2" to 1-1/2" |
| Housing/J-Box | Galvanized steel with bottom-hinged access covers |
| Performance Specs | |
|---|---|
| Lumen Settings | 2000 / 2500 / 3000 lm (switchable) |
| Wattage | Approx. 25W / 32W / 38W (by lumen setting) |
| CCT | 3000K / 3500K / 4000K / 5000K (SWW1 switch) |
| Voltage | MVOLT 120–277V, 50/60 Hz |
| Dimming | UGZ driver: 0–10V and 120V phase dimming to 10% |
Application Examples
- Corridors and lobbies needing consistent, comfortable illumination.
- Conference rooms and private offices with adjustable output/CCT needs.
- Healthcare, education, and retail spaces standardizing on 4" apertures.
- Renovations seeking fewer SKUs through field-adjustable performance.
Installation Tips
- Set lumen and CCT switches before ceiling close-in; verify Non-IC spacing for ALO3.
- Use the adjustable bar hangers for joists spaced 12"–24"; level the aperture flush to the finished ceiling.
- Wire 120–277V per local code; for dimming, land 0–10V control conductors separately from line.
- Order matching 4" trims (e.g., LO4 AR/WR/BR or LW4 wallwash) to complete the assembly.
Frequently Asked Questions
Q: What does ALO3 mean on this housing?
A: ALO3 provides three field-selectable lumen settings—2000, 2500, or 3000 lumens—for on-site flexibility.
Q: Can I change color temperature in the field?
A: Yes. SWW1 lets you switch between 3000K, 3500K, 4000K, and 5000K.
Q: Is this housing IC-rated?
A: For ALO3, the housing is Non-IC. Maintain required clearances from insulation.
Q: What dimmers will work?
A: The UGZ driver supports 0–10V dimming and 120V forward/reverse phase dimming to 10%, compatible with many architectural controls.
Q: Is it suitable for wet locations?
A: Yes, for covered-ceiling wet locations. Wallwash trims are damp location only.
Q: Do I need to order a trim?
A: Yes. This is the housing. Pair with LO4 (downlight) or LW4 (wallwash) 4" trims to complete the fixture.
Q: What are the cutout and aperture sizes?
A: Aperture is 4-5/16"; typical ceiling cutout is 5-1/8" (self-flanged trims).
Q: How long will it last?
A: Rated L80 at 60,000 hours under standard conditions.
