Ketra D3 Fixed New Construction Downlight – 3” Aperture
Unmatched 4-channel Natural Light in a 3-inch fixed downlight with field-changeable optics for new construction projects.
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Product Details
Overview
The most advanced 3-inch downlight with Ketra quality of light, this fixed fixture features field-changeable optics for new construction. The low-profile 3.5-inch housing mounts to ceiling joists before drywall, accommodating 12-inch on-center joists and fire-rated assemblies, engineered for consistent downward illumination. Its IC and airtight rated construction pairs with die-cast aluminum trims honed to a nearly invisible edge. Field-serviceable emitter outputs over 1000 lumens while field-changeable primary optics allow beam angle optimization without fixture replacement. With over 70 patents, Ketra's 4-channel light engine produces unprecedented Natural Light, featuring Vibrancy control that allows customization of how light renders color without changing the color temperature itself, and Color Lock technology that ensures consistent performance throughout the fixture's lifetime. Control the Ketra D3 New Construction with the location-aware HomeWorks, Athena, and myRoom XC control systems to dissolve the boundary between the interior and exterior with sun-tracking precision that encompasses everything from the warmth of candlelight to the cool, pure brilliance of arctic skies.
- 4-channel engine produces full-spectrum natural white light and a range of 16.7 million colors, including pastels and saturated hues
- Delivers white light across an unprecedented color temperature range of 1,400K-10,000K, from warm golden-hued candlelight to the bright, cool light of an arctic sky
- Vibrancy control allows users to fine-tune the spectral composition of white light to manipulate how colors are rendered and perceived without changing color temperature or intensity
- Color Lock technology continuously monitors light output and automatically adjusts to maintain consistent color over the downlight's lifetime
- This fixed, 3-inch downlight is engineered for consistent downward illumination and is available in multiple beam angles
- Ultra-low 3.5-inch profile IC and airtight-rated housing accommodates challenging ceiling spaces, including 12-inch on-center joists and fire-rated assemblies
- Field-serviceable emitter outputs over 1000 lumens with field-changeable primary optics, allowing beam angle optimization without fixture replacement
4-channel natural light/ 1,400K-10,000K/ 90+ CRI with Vibrancy
Native wireless control with Lutron Clear Connect Type X
- HomeWorks
- Athena
- myRoom XC
Specifications & Documents
Performance Specifications
Light Engine
4-channel natural white light
CCT Range
1,400K-10,000K
Saturated Colors
16.7 million fully saturated and pastel colors
Color Rendering
CRI 90+
R9 >90
Vibrancy
Rated Life
50,000 hours to L70
Dimming Range
0.1% - 100%
Delivered Lumens
Up to 1148 lm
Beam Angles
15° Spot (SP)
25° Flood (FL)
40° Wide Flood (WFL)
60° Very Wide Flood (VFL)
Control Specifications
Control Protocol
Wireless RF/CCX (Lutron Clear Connect-Type X)
Dimensions Specifications
Aperture Size
3 in
H x L x W
Housing Height 3.50 in (88.9 mm)
Housing Length 18.38 in (466.8 mm)
Housing Width 10 in (254 mm)
Overall Dimensions
Housing Height 3.50 in (88.9 mm)
Housing Length 18.38 in (466.8 mm)
Housing Width 10 in (254 mm)
Cut-out Dimensions
4 in (101.6 mm) flanged;
5.5 in (139.70 mm) flangless mud-in;
4 in flangeless millwork;
Ceiling Thickness
0.625 - 2.5 in (15.8 mm - 63.5 mm)
Electrical Specifications
Power Consumption
18 W
Voltage
120 V~ 50/60 Hz
Mechanical Specifications
Installation Options
Flanged, Flangeless Mud-in, Flangeless Millwork
Certifications Specifications
Environmental Rating
IP20 indoor dry/ damp location
Certifications
UL, cUL, 120V~: FCC Class B, IC Rated; T24(JA8)
Warranty
5 year fixture, LED and dimming warranty