Housing & Trims
Nora NIOB-2RPH/HL 2" Iolite Round Pinhole Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
2” Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Fixed pinhole reflector focuses the beam spread t...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
WAC R4FSDT-927 4" Square Downlight Trimmed, 2700K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R2FRDL-930 2" Round Downlight Trimless, 3000K
WAC Lighting
Original price
$107.95
-
Original price
$107.95
Original price
$107.95
$107.95
-
$107.95
Current price
$107.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$107.95
-
Original price
$107.95
Original price
$107.95
$107.95
-
$107.95
Current price
$107.95
Nora NIOB-2RPHA/10 2" Iolite Round Adjustable Pinhole Trim - 1000 Lumens
Nora Lighting
Original price
$77.40
-
Original price
$87.57
Original price
$77.40
-
$87.57
$77.40
-
$87.57
Current price
$77.40
In stock
2” Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Adjustable pinhole reflector focuses the beam spr...
View full details
Original price
$77.40
-
Original price
$87.57
Original price
$77.40
-
$87.57
$77.40
-
$87.57
Current price
$77.40
Nora NIO-4RNDC/HL 4" Iolite Round Reflector Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4" Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Deep regressed cone reflectors optimize visual cut-...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4RD/HL 4" Iolite LED Round Adjustable Deep Reflector Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4″ Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Die-cast adjustable reflectors optimize visual cut-...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4RC/HL 4" Iolite LED Round Adjustable Cone Reflector Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4″ Iolite reflectors can be specified for use in new construction or remodel applications. Die-cast adjustable cone reflectors optimize visual cut-...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIOB-2RC/HL 2" Iolite Round Adjustable Cone Reflector Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
2" Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Die-cast adjustable cone reflectors optimize visu...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4SNDSQ/HL 4" Iolite LED Square Reflector with Square Aperture - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4” Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Deep regressed cone reflectors optimize visual cut-...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4SNDC/HL 4" Iolite Square Reflector with Round Aperture Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4" Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Deep regressed cone reflectors optimize visual cut-...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4RG/HL 4" Iolite Round Adjustable Gimbal Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4" Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Die-cast adjustable surface gimbals adjust to aim t...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIOB-2RNB/HL 2" Iolite Round Bullnose Reflector Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
2” Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Bullnose reflector with a filleted aperture which ...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
WAC R4FSDT-935 4" Square Downlight Trimmed, 3500K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FSDL-935 4" Square Downlight Trimless, 3500K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRDT-935 4" Round Downlight Trimmed, 3500K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRDL-935 4" Round Downlight Trimless, 3500K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRAT-935 4" Round Adjustable Trimmed, 3500K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRAL-935 4" Round Adjustable Trimless, 3500K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R2FRDT-935 2" Round Downlight Trimmed, 3500K
WAC Lighting
Original price
$107.95
-
Original price
$107.95
Original price
$107.95
$107.95
-
$107.95
Current price
$107.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$107.95
-
Original price
$107.95
Original price
$107.95
$107.95
-
$107.95
Current price
$107.95
WAC R2FRDL-935 2" Round Downlight Trimless, 3500K
WAC Lighting
Original price
$107.95
-
Original price
$107.95
Original price
$107.95
$107.95
-
$107.95
Current price
$107.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$107.95
-
Original price
$107.95
Original price
$107.95
$107.95
-
$107.95
Current price
$107.95
WAC R4FSDT-930 4" Square Downlight Trimmed, 3000K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FSDL-930 4" Square Downlight Trimless, 3000K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FSDL-927 4" Square Downlight Trimless, 2700K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRDT-930 4" Round Downlight Trimmed, 3000K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRDT-927 4" Round Downlight Trimmed, 2700K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRDL-930 4" Round Downlight Trimless, 3000K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRDL-927 4" Round Downlight Trimless, 2700K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRAT-930 4" Round Adjustable Trimmed, 3000K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRAT-927 4" Round Adjustable Trimmed, 2700K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRAL-930 4" Round Adjustable Trimless, 3000K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R4FRAL-927 4" Round Adjustable Trimless, 2700K
WAC Lighting
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$116.95
-
Original price
$116.95
Original price
$116.95
$116.95
-
$116.95
Current price
$116.95
WAC R2FRDT-930 2" Round Downlight Trimmed, 3000K
WAC Lighting
Original price
$107.95
-
Original price
$107.95
Original price
$107.95
$107.95
-
$107.95
Current price
$107.95
In stock
The FQ Recessed series offers a complete line of high performance LED luminaires that provide outstanding functionality and quality. The series fea...
View full details
Original price
$107.95
-
Original price
$107.95
Original price
$107.95
$107.95
-
$107.95
Current price
$107.95
CSL ED5SNIC Eco-Downlight 5" 24W Shallow New Construction IC Housing
CSL Lighting
Original price
$254.00
-
Original price
$254.00
Original price
$254.00
$254.00
-
$254.00
Current price
$254.00
In stock
Features Housing only. Trim sold separately Size: 5" Installation Type: New Construction IC Housing Wattage: 24W Voltage: 120/277V Color Temperat...
View full details
Original price
$254.00
-
Original price
$254.00
Original price
$254.00
$254.00
-
$254.00
Current price
$254.00
Nora NIO-4PSTLNDC 4" Iolite PLUS Square Trimless Downlight
Nora Lighting
Original price
$113.31
-
Original price
$118.71
Original price
$113.31
-
$118.71
$113.31
-
$118.71
Current price
$113.31
In stock
4″ PLUS Trimless Iolite reflectors have no exposed trim flange and do not extend beyond the ceiling plane. Iolite PLUS Trimless requires a PLUS Tri...
View full details
Original price
$113.31
-
Original price
$118.71
Original price
$113.31
-
$118.71
$113.31
-
$118.71
Current price
$113.31
Nora NIO-4PRTLNDC 4" Iolite PLUS Round Trimless Downlight
Nora Lighting
Original price
$109.71
-
Original price
$120.51
Original price
$109.71
-
$120.51
$109.71
-
$120.51
Current price
$109.71
In stock
4″ PLUS Trimless Iolite reflectors have no exposed trim flange and do not extend beyond the ceiling plane. Iolite PLUS Trimless requires a PLUS Tri...
View full details
Original price
$109.71
-
Original price
$120.51
Original price
$109.71
-
$120.51
$109.71
-
$120.51
Current price
$109.71
Nora NHIOICD-4PS25 4" Iolite PLUS LED Dedicated IC Air-Tight New Construction Housing, 2500 Lumens
Nora Lighting
Original price
$143.91
-
Original price
$143.91
Original price
$143.91
$143.91
-
$143.91
Current price
$143.91
In stock
New construction housing for use with Square PLUS trimless only. Rated for insulated ceilings and can be in direct contact with insulation. Air-tig...
View full details
Original price
$143.91
-
Original price
$143.91
Original price
$143.91
$143.91
-
$143.91
Current price
$143.91
Nora NIO-4RTLNDC/HL 4" Iolite Round Trimless Open Reflector Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4" Trimless Iolite reflectors have no exposed trim flange and do not extend beyond the ceiling plane. Iolite Trimless requires a Trimless Mud Ring ...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4RTLA/HL 4" Iolite LED Round Trimless Adjustable Reflector - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4" Trimless Iolite reflectors have no exposed trim flange and do not extend beyond the ceiling plane. Iolite Trimless requires a Trimless Mud Ring ...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4SW/HL 4" Iolite Square Wall Wash Reflector Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4” Iolite Wall wash reflectors can be specified for use with Iolite new construction housings. Wall wash reflector to illuminate a wall evenly at a...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4RSL/HL 4" Iolite Round Adjustable Slot Aperture Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4" Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Adjustable slot aperture focus the beam spread thro...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4RPHA/HL 4" Iolite Round Adjustable Pinhole Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4" Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Adjustable pinhole reflector focuses the beam sprea...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4RPH/HL 4" Iolite Round Fixed Pinhole Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4" Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Fixed Pinhole reflector focuses the beam spread thr...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4SNB/HL 4" Iolite Square Bullnose Reflector Trim- High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4” Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Bullnose reflector with a filleted aperture which a...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4RNB/HL 4" Iolite LED Round Bullnose Reflector Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4" Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Bullnose reflector with a filleted aperture which a...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4SG/HL 4" Iolite LED Square Adjustable Surface Gimbal - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4" Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Die-cast adjustable surface gimbals adjust to aim t...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIO-4SC/HL 4" Iolite LED Square Adjustable Cone Reflector - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
4” Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Die-cast adjustable cone reflectors optimize visual...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIOB-2RSL/HL 2" Iolite Round Adjustable Slot Aperture Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
2” Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Adjustable slot aperture focus the beam spread th...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
Nora NIOB-2RPHA/HL 2" Iolite Round Adjustable Pinhole Trim - High Lumen
Nora Lighting
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
In stock
2” Iolite reflectors can be specified for use with Iolite new construction or remodel housings. Adjustable pinhole reflector focuses the beam spr...
View full details
Original price
$105.84
-
Original price
$116.10
Original price
$105.84
-
$116.10
$105.84
-
$116.10
Current price
$105.84
LED Recessed Housing
Recessed downlight housing is the structural part of a recessed light fixture that gets installed inside the ceiling. That holds all the electrical components.
LED Recessed Trims
Recessed trim is the visible outer ring or finish of a recessed downlight. It sits flush (or slightly below) the ceiling and surrounds the light source, giving the fixture its final appearance and often controlling how the light is spread or directed.