Catalog
Number
Notes
FEATURES & SPECIFICATIONS
INTENDED USE
Type
Provides accent illumination that visually expands the space and creates a relaxing atmosphere in residential
and commercial applications such as hospitality, educational, health care and circulation areas. Ideal for
use in hallways, stairways, dining areas, foyers, offices and meeting rooms.
CONSTRUCTION
Decorative Indoor
Quarter sphere is simplicity in design that complements a variety of decors. Durable milk-white acrylic
diffuser with white or black trim provides a widespread uniform illumination. Open top design provides
indirect up light on the walls.
Quarter Sphere
ELECTRICAL
Utilizes (2) 13W compact twin tube 2-pin (TT) fluorescent lamps or double twin tube (DTT) 4-pin on trim
fixtures only for energy efficiency, superior color rendering and long life (not included).
Sconce
Standard with pre-heat magnetic ballast (120 volt, 60Hz).
For use with non-dimmable switches only.
INSTALLATION
All mounting hardware included.
COMPACT TT OR DTT
FLUORESCENT
LISTINGS
UL listed and CSA Certified (standard) and suitable for damp locations. ADA compliant.
WARRANTY
2-year limited warranty. Complete warranty terms located at
www.acuitybrands.com/CustomerResources/Terms_and_conditions.aspx
NOTE: Actual performance may differ as a result of end-user environment and application.
Specifications subject to change without notice.
Dimensions
Nominal
Size
Lamp
Configuration
Model
Number
Number of
Lamps
(A) Width
inches (cm)
(B) Height
inches (cm)
(C) Extension*
inches (cm)
13"
11957
(2) 13W compact
(TT) or (DTT)
13-7/8" (35.2)
6-7/8" (17.46)
3-1/2" (8.9)
15"
11963
(2) 13W compact
(TT) or (DTT)
15-3/4" (40.0)
7-7/8" (20.0)
4" (10.2)
* Extension from wall
(B)
All dimensions are inches (centimeters) unless otherwise indicated.
ORDERING INFORMATION
Example: 11957
For shortest lead times, configure product using bolded options.
Series1,2
Ballast/Voltage
11957
11963 WH
11963 BL
11963 2 13DTT WH
11963 2 13DTT BL
(C)
(A)
(blank)
Trimless (2) 13W compact (TT) fluorescent lamps required
White trim (2) 13W compact (TT) fluorescent lamps required
Black trim (2) 13W compact (TT) fluorescent lamps required
White trim (2) 13W compact (DTT) fluorescent lamps required
Black trim (2) 13W compact (DTT) fluorescent lamps required
120 volt
Options
(consult factory)
Other voltage and ballast
types (consult factory)
Replacement parts: Order as separate catalog number.
U8590
U856WH
U856BL
Trimless white acrylic diffuser
White trim / white acrylic diffuser
Black trim / white acrylic diffuser
Notes
1 LAMPS NOT INCLUDED
2 Use with non-dimmable switches only.
QARS
DECORATIVE INDOOR:
One Lithonia Way, Conyers, GA 30012
Phone: 800-748-5070
Fax: 770-860-3903
www.lithonia.com
© 2008-2015 Acuity Brands Lighting, Inc. All rights reserved. Rev. 12/08/15