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DEEPCELL SURFACE

DPB2S16LS26U OR 22U

Page 2 of 2

2' x 2' SURFACE FLUORESCENT, 3" TYPE, 16 CELL PARABOLIC LOUVER, 2 LAMP T8 OR T12

Lightolier 

a Genlyte Thomas Company

www.lightolier.com

Technical Information: (978) 657-7600 • Fax (978) 658-0595
631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division)
A0902

Section 2A/Folio G50-85 REV. B

Job Information

Type:

OPTIONS & ACCESSORIES

STEM AND CANOPY SETS:

Suspends fixture 6", 12", 18" or 24" from surface.

(Four per fixture is recommended.) 

Catalog Number: ASC6 CSP

(6"), 

ASC12

CSP

(12"), 

ASC18 CSP

(18"), 

ASC24 CSP

(24")

FUSING:

Internal fast-blow fusing.
SUFFIX: 

GLR

.

Internal slow-blow fusing.
SUFFIX: 

GMF

.

RADIO INTERFERENCE FILTER

120 or 277 volt, 50 or 60 Hz. One per fixture

is standard. SUFFIX: 

RF

.

ELECTRICAL/WIRING OPTIONS

Consult factory. 

SPECIFICATIONS

PERFORMANCE:

In an installation of 2U lamp 31W luminaires in a room cavi-

ty ratio of 1, with a reflectance of 80% ceiling, 50% wall, 20% floor, the C.U.
shall not be less than .58. To prevent glare the VCP shall be not less than 87
either lengthwise or cross wise (at 100fc level) and the average brightness at
65° shall not exceed 914 footlamberts. To control veiling reflections, luminaire
output in the 30°-90° zone shall be not less than 61.5%.

SPECIFICATIONS (continued)

MATERIALS: Chassis parts

are die-formed 20 gauge cold rolled steel, stud-

welded for rigidity with all seams finished smooth.

LOUVER: 

pre-anodized aluminum (Coilzak® or equal).

STANDARD FINISH: Louver

—low iridescence, semi-specular pre-anodized

vertical grain reflector sheet. 

Cavity

—white baked acrylic enamel minimum

86% reflectance. Phosphate undercoating. 

Chassis exterior

—white baked

acrylic enamel.

ELECTRICAL:

Thermally protected class “P” ballast C.B.M. approved, non PCB.

If K.O. is within 3" of ballast, use wire suitable for at least 90°.

LABELS:

I.B.E.W./UL and C-UL.

PHOTOMETRY

MODEL NO. DPB2S16LS26U120SO

coefficients of utilization — zonal cavity method

RF

20

20

20

RC

80

50

30

RW

70

50

30

50

30

10

50

30

10

1

60

58

57

55

54

52

53

52

51

2

56

52

50

50

47

45

48

46

44

3

52

47

44

45

42

40

43

41

39

4

48

43

38

41

37

35

39

37

34

5

45

38

34

37

33

31

36

33

30

6

41

35

31

34

30

27

33

30

27

7

39

32

28

31

27

25

30

27

24

8

36

29

25

28

25

22

28

24

22

9

34

27

23

26

23

20

26

22

20

10

32

25

21

24

21

18

24

21

18

visual comfort probability 

room size

ceiling height

ceiling height

W

L

8.5

10.0

13.0

16.0

8.5

10.0

13.0

16.0

20

20

81

74

70

74

80

72

66

74

20

30

82

76

72

70

81

74

69

68

20

40

84

78

75

72

83

76

72

70

20

60

85

80

77

74

84

78

74

72

30

20

84

79

72

73

83

77

69

74

30

30

85

80

74

70

84

78

71

68

30

40

86

81

76

72

85

80

74

70

30

60

86

82

78

74

86

81

76

72

30

80

87

83

79

76

86

82

77

74

40

20

86

81

75

74

85

79

73

75

40

30

87

82

77

71

86

80

75

70

40

40

87

83

79

73

87

82

77

72

40

60

87

84

80

74

87

83

78

73

40

80

88

84

81

76

87

84

79

75

40

100

88

85

82

77

87

84

81

77

60

30

87

83

78

74

86

82

76

73

60

40

88

84

80

75

87

83

78

74

60

60

88

85

81

76

87

84

79

75

60

80

88

85

82

78

87

84

81

77

60

100

88

85

83

79

88

85

82

78

100

40

88

84

81

77

87

83

79

76

100

60

88

85

82

78

88

84

81

77

100

80

88

86

83

79

88

85

82

78

100

100

88

86

84

80

88

85

83

79

room cavity ratio

luminaries lengthwise

luminaries crosswise

ORDERING INFORMATION  

Explanation of Catalog Number.   Example: DPB2S16LS26U120SOGLR

DP

DEEPCELL

PARABOLIC:

Pre-anodized

Aluminum

Louver

B

BODY STYLE:

Surface Box

2

FIXTURE

WIDTH

S

CEILING

TYPE:

S

=Surface

16

NUMBER OF

CELLS

LOUVER FINISH*:

L

= Low-iridescence semi-specular

(standard)

P

= Low-iridescence specular

W

= White Paint

S

BALLAST

COVER

2

VOLTAGE:

120 or 277

*Consult factory for availability of louver finishes.

LAMP

QUANTITY:

(By Others)

2

=2 Lamp

LAMP/

FIXTURE LENGTH:

2U

=T8, 1-5/8" U Lamp

6U

=6" U Lamp T8 or   

T12

(Nominal 24")

BALLAST TYPE:

1-2 Lamp Mag. T12

LE

<20THD <10THD

1-2 Lamp Elec. T8

SO*

H

I

*

LOL Dimming T8

PS

*

Instant Start Standard

Other dimming options. Consult factory.

OPTIONS:

Add appropriate suffix

to catalog no., ie: (GLR)

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