
Lumi Indoor
SOLSTICE
Application inspiration · not a project reference
SOLSTICE is part of Lumi Indoor. Coordinate the selected article’s dimensions, installation details and configuration with the project specification; these details can vary between models in the same family.
Down Light
SOLSTICE
SOLSTICE is a down light family within the LUMIBRIGHT Lumi Indoor collection. Explore 1 models, including LBT3533, with model-specific specifications and configuration choices. LBT3533 specifications include power: 45W; colour temperature: 4000K; IP rating: IP20; dimensions: Ø183x183x153mm. Compare the SOLSTICE range by power, colour temperature, protection rating and dimensions using the technical table below. Open an individual model to explore its available finishes and optics, select a listed order code and prepare a specification sheet where configuration data is available. Keep the chosen model reference with your project schedule so the lighting and installation teams can coordinate the same selection. For additional drawings, photometry or project-specific requirements, contact the LUMIBRIGHT specification team with your model code.

Model specifications
| Article | Wattage | CCT | IP | Dimensions | Cut-out |
|---|---|---|---|---|---|
| LBT3533 | Wattage45W | CCT4000K | IPIP20 | DimensionsØ183x183x153mm | Cut-outØ165x165mm |
Dimensions
Technical Drawing
Drawing and sizes shown for model LBT3533.
Size — model LBT3533
Ø183x183x153mm
Cut-Out
Ø165x165mm
Technical Data
Full Specification
| Dimensions | Ø183x183x153mm |
|---|---|
| Cut-out | Ø165x165mm |
| Power | 45W |
| Lumen output | Not published — technical review required |
| Efficacy | Not published — technical review required |
| Optics / beam angle | 25° · 60° |
| Colour temperature | 3000K · 4000K · 5000K |
| CRI Ra | 90 |
| R9 | Not published — technical review required |
| TM-30 Rf / Rg | Not published — technical review required |
| UGR | Not published — technical review required |
| IP rating | IP20 |
| IK rating | Not published — technical review required |
| Ambient temperature (Ta) | Not published — technical review required |
| Driver | Not published — technical review required |
| Dimming / control | Not published — technical review required |
| Input voltage | 36VDC |
| Light source | Not published — technical review required |
| Material | Not published — technical review required |
| Finish | black · White |
| Mounting / installation | Not published — technical review required |
| Net weight | Not published — technical review required |
| Certification | Not published — technical review required |
| Lifetime | Not published — technical review required |
| Warranty | Not published — technical review required |
| Lead time | Not published — technical review required |
9 of 26 specification rows published from the 2026 master data. Values vary by model; missing test data is not estimated. Select an exact model for approval.
Specifications
At a Glance
45W
Power
2 options
Beam Angle
3 CCT
3000K, 4000K, 5000K
CRI 90
Colour Rendering
IP20
Protection Rating
2 finishes
Body Finish
Ø183x183x153mm
Dimensions
Ø165x165mm
Cut-Out






