Lotus LD4R 4" Deep Regressed LED Downlight — 15W
White Reflector / White Trim / 2700K — Warm White / 30° Standard
$36.69
Sale price
$36.69
Regular price
$53.95
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Lotus LD4R 4" Deep Regressed LED Downlight — 15W
$36.69
Sale price
$36.69
Regular price
$53.95
Use the product options above
Lotus LD4R 15W configuration guide
The selected variant above controls the price, exact SKU, availability and Add to Cart. Use this guide to confirm the installation architecture, finish, colour-temperature behaviour, beam and compatible accessories.
15W standard output
Up to 1,500 lumens by CCT
Up to 1,500 lumens by CCT
Four architectures
Regular, Thin Trim, Trimless and sloped
Regular, Thin Trim, Trimless and sloped
Three beams
15°, 30° or 60°
15°, 30° or 60°
Driver included
120V AC TRIAC dimmable
120V AC TRIAC dimmable
Ordering rule: The exact Lotus SKU displayed with the selected variant is the ordering contract. The family-level information below does not replace the selected SKU.
Which LD4R model is right for the project?
| Model | Output | Choose it when |
|---|---|---|
| LD4R 15W — this page | 15W, up to 1,500 lm | You need the broadest architecture and finish selection at standard output. |
| LD4R-HO 18W | 18W, up to 1,690 lm | The lighting plan requires more output from the same deep-regressed family. |
| LD4R-CPL | 15W or 18W | A corrosion-resistant white or black polycarbonate assembly is required. |
How to select the correct variant
- Choose the architecture: Regular, Thin Trim, Trimless or 5-inch sloped.
- Choose the reflector and trim finish: Only use a finish offered within the selected architecture.
- Choose the light behaviour: Fixed CCT, Warm Dim or 5-CCT selectable.
- Choose the beam: 30° Standard, 15° Spot or 60° Flood.
- Verify the SKU above: Use the displayed finished SKU on the quote, purchase order and confirmation.
Warm Dim naming: 32K means Warm Dim 3000K–2000K. It is not fixed 3200K. The 3018K configuration means Warm Dim 3000K–1800K.
Match the architecture to the ceiling
| Architecture | Installation guidance | Compatible rough-in |
|---|---|---|
| Regular visible trim | 4¼-inch cutout, approximately 3½-inch depth and 4?-inch outside diameter. | RIP414 or FRP4 |
| Thin Trim | 3¾-inch cutout. TT means Thin Trim, not Textured Trim. | RIP334 |
| Trimless / Invisible Trim | Requires architecture-specific preconstruction and ceiling finishing before completion. | RIP412 or FRP412 |
| 5-inch sloped | 5–5½-inch cutout, approximately 6¼-inch outside diameter and approximately 3¼-inch clearance. | RIP5 or FRP5 |
Choose the beam
15° Spot
Narrow distribution for accents and focused highlights.
Narrow distribution for accents and focused highlights.
30° Standard
Balanced architectural downlighting and the default beam.
Balanced architectural downlighting and the default beam.
60° Flood
Broad distribution for wider, more even coverage.
Broad distribution for wider, more even coverage.
Lens rule: Finished 15° and 60° SKUs already include the applicable optic. Do not add a second lens unless a replacement is required.
Published 15W light output
Fixed CCT and Warm Dim output
| 2700K | 1,380 lm |
|---|---|
| 3000K | 1,430 lm |
| 3500K | 1,400 lm |
| 4000K | 1,500 lm |
| 5000K | 1,460 lm |
| Warm Dim 3000K–2000K | 1,130 lm |
| Warm Dim 3000K–1800K | 1,300 lm |
5-CCT selectable output
| 2700K | 1,170 lm |
|---|---|
| 3000K | 1,240 lm |
| 3500K | 1,350 lm |
| 4000K | 1,400 lm |
| 5000K | 1,420 lm |
Driver and accessory guidance
- Included: One 120V AC TRIAC-dimmable driver per fixture.
- 0–10V or 347V projects: Use the separately sold LLL-LD1535TR.
- Remote driver location: Consider the MEC10 armoured extension cable after confirming routing and compatibility.
- Oversized regular opening: Confirm whether a GR4 goof ring is appropriate.
Core family specifications
- 4¼-inch controlled cutout for regular configurations
- Approximately 3½-inch fixture depth
- Approximately 4?-inch outside diameter
- 90+ CRI
- Type IC, airtight, wet-location, open-plenum and IP54
- cULus certified
- Operating range: ?40°C to +40°C
- Projected life: 50,000 hours to 70% light output
- No separate recessed housing required
Documents and project support
- Download the Lotus LD4R specification sheet
- Ask Simply Secured to confirm compatibility
- Request project pricing
Frequently asked questions
Does 32K mean fixed 3200K?
No. In this product family, 32K means Warm Dim 3000K–2000K.
What does TT mean?
TT means Thin Trim, not Textured Trim. It uses a 3¾-inch cutout and the dedicated RIP334 rough-in plate.
Do I need another lens for a 15° or 60° variant?
No. The finished 15° and 60° SKUs already include the applicable optic.
Is the included driver 0–10V?
No. The included driver is 120V AC TRIAC dimmable. LLL-LD1535TR is the optional driver for supported 120–347V AC and 0–10V projects.