Lithonia Lighting®, an Acuity Brands Company, has delivered the

Best Value in Lighting® for more than 60 years. As North America’s

leading lighting manufacturer and lighting application expert,

Lithonia Lighting has provided customers with quality, reliable,

high-performing lighting applications and energy-efficient

technology. Partner with Lithonia Lighting for lighting solutions

that enable the latest developments in solid-state lighting technology

to deliver the highest aspirations of sustainable lighting.

choose Lithonia Lighting

downlighting | one lithonia way | Conyers, gA 30012 | Phone: 800.315.4935 | www.lithonia.com ©2009 Acuity Brands lighting, inc. 1/09 dt7140 Form no. 722.275

LED technology provides a sustainable solution for worry-free

maintenance, energy efficiency and environmental friendliness.

Integrating this technology, the DoM system reduces overall

cost of ownership:

• LEDsoperateonlessenergythanstandarddownlights*

• Nolampstoreplaceoveralifeof50,000hours

• Longlamplifemeansvirtuallynomaintenance

• Nomercuryreduceslamprecyclingcosts

*Averages27%energysavingsovercomparableCFLluminaires

the sustainable choice

led downl ight ing

Volumetric downlighting

meets LED technology in the

contemporary RT5D LED.

Defining the shape of LED

downlighting through

engineering superiority.

maximized thermal dissipation

engineered to last

LEDs mounted to a metal core printed

circuit board.

Heat-drawing collar pulls heat away

from the board.

Thermal pathways link collar to casting.

The multi-fin casting design provides

optimal thermal transfer.

Uses the latest high-lumen LEDs.

Eliminates uncomfortable glare

through shielded light source.

Uses the latest highly reflective

materials to maximize

energy efficiency.

LED driver installed in fully enclosed housing with easy access through junction-box.

Accessible from below, fixture and trim install like a traditional downlight assembly.

Adjustable mounting wings allow for different mounting options.

Adjustmentslotsaccommodatevariousceilingthicknesses,upto1-1/2”.

Lightweight aluminum housing protects the optical assembly during shipment and installation.

the system of choice

DoMsystem

comparableCFL

The highly reflective material in the dome,

combined with optimal LED positioning

maximizes delivered lumens per watt while

shielding direct view of light source.

Multiple lumen packages (comparable to

commonlyusedCFLsources)areavailable.

maximized efficiency

Heat is the primary enemy to LED

performance. The unique integrated

housing and heat sink design provide

optimal thermal transfer ensuring

efficient heat dissipation. Keeping the

LED junction temperatures low enables

the long life of the LED light source.

thermal keys to life

advanced mechanical designsuperior optical performance

the series

The dome has long been a cornerstone in architecture.

FromthePantheoninRomebuiltin125ADtothe

United States Capitol building, the dome is a feature of

grand civic architecture. The dome conveys structural

strength and spaciousness. Lithonia Lighting brings

the classic shape of the dome (DoM) together with the

latest advancements in solid state lighting technology

to provide an LED downlight solution for all general

illumination applications.

The DoM series is a family of high-performance

downlights with clean aesthetics and a low-glare,

uniform light distribution.

Designed the right way — DoM represents a systematic

approach integrating new technology and quality

material throughout the luminaire’s components to

maximize performance and aesthetics while ensuring

the quality of light.

The DoM design shields the high-brightness LED light

sources, preventing direct view of the source from any

angle, and provides a structurally sound housing that is

as robust and long-lasting as the LED source inside.

The DoM design combined with highly reflective material

creates a diffused light source that delivers a volumetric

lightdistributionmoreefficientlythanacomparableCFL

luminaire.

This series is ideal for supplying high-quality general

illumination in corridors, offices, reception areas, schools

and retail environments. The DoMisavailablein6”and

8”apertureswithpackagesrangingfrom600-1500

delivered lumens.

Defining the shape of LED downlighting

The DoM indirect optical design provides

a volumetric distribution of light. This

fills the volume of space with the right

amount of light; producing a softer, more

comfortable light and truly enhancing the

environment. The DoM makes spaces more

attractive and comfortable by making

your space feel brighter without the glare

or cave effect of traditional downlights.

quality of light output

1

1

2

3

3

2

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

maximized thermal dissipation

engineered to last

LEDs mounted to a metal core printed

circuit board.

Heat-drawing collar pulls heat away

from the board.

Thermal pathways link collar to casting.

The multi-fin casting design provides

optimal thermal transfer.

Uses the latest high-lumen LEDs.

Eliminates uncomfortable glare

through shielded light source.

Uses the latest highly reflective

materials to maximize

energy efficiency.

LED driver installed in fully enclosed housing with easy access through junction-box.

Accessible from below, fixture and trim install like a traditional downlight assembly.

Adjustable mounting wings allow for different mounting options.

Adjustmentslotsaccommodatevariousceilingthicknesses,upto1-1/2”.

Lightweight aluminum housing protects the optical assembly during shipment and installation.

the system of choice

DoMsystem

comparableCFL

The highly reflective material in the dome,

combined with optimal LED positioning

maximizes delivered lumens per watt while

shielding direct view of light source.

Multiple lumen packages (comparable to

commonlyusedCFLsources)areavailable.

maximized efficiency

Heat is the primary enemy to LED

performance. The unique integrated

housing and heat sink design provide

optimal thermal transfer ensuring

efficient heat dissipation. Keeping the

LED junction temperatures low enables

the long life of the LED light source.

thermal keys to life

advanced mechanical designsuperior optical performance

the series

The dome has long been a cornerstone in architecture.

FromthePantheoninRomebuiltin125ADtothe

United States Capitol building, the dome is a feature of

grand civic architecture. The dome conveys structural

strength and spaciousness. Lithonia Lighting brings

the classic shape of the dome (DoM) together with the

latest advancements in solid state lighting technology

to provide an LED downlight solution for all general

illumination applications.

The DoM series is a family of high-performance

downlights with clean aesthetics and a low-glare,

uniform light distribution.

Designed the right way — DoM represents a systematic

approach integrating new technology and quality

material throughout the luminaire’s components to

maximize performance and aesthetics while ensuring

the quality of light.

The DoM design shields the high-brightness LED light

sources, preventing direct view of the source from any

angle, and provides a structurally sound housing that is

as robust and long-lasting as the LED source inside.

The DoM design combined with highly reflective material

creates a diffused light source that delivers a volumetric

lightdistributionmoreefficientlythanacomparableCFL

luminaire.

This series is ideal for supplying high-quality general

illumination in corridors, offices, reception areas, schools

and retail environments. The DoMisavailablein6”and

8”apertureswithpackagesrangingfrom600-1500

delivered lumens.

Defining the shape of LED downlighting

The DoM indirect optical design provides

a volumetric distribution of light. This

fills the volume of space with the right

amount of light; producing a softer, more

comfortable light and truly enhancing the

environment. The DoM makes spaces more

attractive and comfortable by making

your space feel brighter without the glare

or cave effect of traditional downlights.

quality of light output

1

1

2

3

3

2

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

maximized thermal dissipation

engineered to last

LEDs mounted to a metal core printed

circuit board.

Heat-drawing collar pulls heat away

from the board.

Thermal pathways link collar to casting.

The multi-fin casting design provides

optimal thermal transfer.

Uses the latest high-lumen LEDs.

Eliminates uncomfortable glare

through shielded light source.

Uses the latest highly reflective

materials to maximize

energy efficiency.

LED driver installed in fully enclosed housing with easy access through junction-box.

Accessible from below, fixture and trim install like a traditional downlight assembly.

Adjustable mounting wings allow for different mounting options.

Adjustmentslotsaccommodatevariousceilingthicknesses,upto1-1/2”.

Lightweight aluminum housing protects the optical assembly during shipment and installation.

the system of choice

DoMsystem

comparableCFL

The highly reflective material in the dome,

combined with optimal LED positioning

maximizes delivered lumens per watt while

shielding direct view of light source.

Multiple lumen packages (comparable to

commonlyusedCFLsources)areavailable.

maximized efficiency

Heat is the primary enemy to LED

performance. The unique integrated

housing and heat sink design provide

optimal thermal transfer ensuring

efficient heat dissipation. Keeping the

LED junction temperatures low enables

the long life of the LED light source.

thermal keys to life

advanced mechanical designsuperior optical performance

the series

The dome has long been a cornerstone in architecture.

FromthePantheoninRomebuiltin125ADtothe

United States Capitol building, the dome is a feature of

grand civic architecture. The dome conveys structural

strength and spaciousness. Lithonia Lighting brings

the classic shape of the dome (DoM) together with the

latest advancements in solid state lighting technology

to provide an LED downlight solution for all general

illumination applications.

The DoM series is a family of high-performance

downlights with clean aesthetics and a low-glare,

uniform light distribution.

Designed the right way — DoM represents a systematic

approach integrating new technology and quality

material throughout the luminaire’s components to

maximize performance and aesthetics while ensuring

the quality of light.

The DoM design shields the high-brightness LED light

sources, preventing direct view of the source from any

angle, and provides a structurally sound housing that is

as robust and long-lasting as the LED source inside.

The DoM design combined with highly reflective material

creates a diffused light source that delivers a volumetric

lightdistributionmoreefficientlythanacomparableCFL

luminaire.

This series is ideal for supplying high-quality general

illumination in corridors, offices, reception areas, schools

and retail environments. The DoMisavailablein6”and

8”apertureswithpackagesrangingfrom600-1500

delivered lumens.

Defining the shape of LED downlighting

The DoM indirect optical design provides

a volumetric distribution of light. This

fills the volume of space with the right

amount of light; producing a softer, more

comfortable light and truly enhancing the

environment. The DoM makes spaces more

attractive and comfortable by making

your space feel brighter without the glare

or cave effect of traditional downlights.

quality of light output

1

1

2

3

3

2

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

Lithonia Lighting®, an Acuity Brands Company, has delivered the

Best Value in Lighting® for more than 60 years. As North America’s

leading lighting manufacturer and lighting application expert,

Lithonia Lighting has provided customers with quality, reliable,

high-performing lighting applications and energy-efficient

technology. Partner with Lithonia Lighting for lighting solutions

that enable the latest developments in solid-state lighting technology

to deliver the highest aspirations of sustainable lighting.

choose Lithonia Lighting

downlighting | one lithonia way | Conyers, gA 30012 | Phone: 800.315.4935 | www.lithonia.com ©2009 Acuity Brands lighting, inc. 1/09 dt7140 Form no. 722.275

LED technology provides a sustainable solution for worry-free

maintenance, energy efficiency and environmental friendliness.

Integrating this technology, the DoM system reduces overall

cost of ownership:

• LEDsoperateonlessenergythanstandarddownlights*

• Nolampstoreplaceoveralifeof50,000hours

• Longlamplifemeansvirtuallynomaintenance

• Nomercuryreduceslamprecyclingcosts

*Averages27%energysavingsovercomparableCFLluminaires

the sustainable choice

led downl ight ing

Volumetric downlighting

meets LED technology in the

contemporary RT5D LED.

Defining the shape of LED

downlighting through

engineering superiority.

Lithonia Lighting®, an Acuity Brands Company, has delivered the

Best Value in Lighting® for more than 60 years. As North America’s

leading lighting manufacturer and lighting application expert,

Lithonia Lighting has provided customers with quality, reliable,

high-performing lighting applications and energy-efficient

technology. Partner with Lithonia Lighting for lighting solutions

that enable the latest developments in solid-state lighting technology

to deliver the highest aspirations of sustainable lighting.

choose Lithonia Lighting

downlighting | one lithonia way | Conyers, gA 30012 | Phone: 800.315.4935 | www.lithonia.com ©2009 Acuity Brands lighting, inc. 1/09 dt7140 Form no. 722.275

LED technology provides a sustainable solution for worry-free

maintenance, energy efficiency and environmental friendliness.

Integrating this technology, the DoM system reduces overall

cost of ownership:

• LEDsoperateonlessenergythanstandarddownlights*

• Nolampstoreplaceoveralifeof50,000hours

• Longlamplifemeansvirtuallynomaintenance

• Nomercuryreduceslamprecyclingcosts

*Averages27%energysavingsovercomparableCFLluminaires

the sustainable choice

led downl ight ing

Volumetric downlighting

meets LED technology in the

contemporary RT5D LED.

Defining the shape of LED

downlighting through

engineering superiority.