Architectural Profiles
Lytespread LSB 1, 2 and 3 Lamp T-5 or 2 lamp T-8 Direct-Indirect Luminaire
ALS
Coefficients of Utilization % Effective Ceiling Cavity Reflectance
CANDLEPOWER CURVE
LSB-13 1-T-5 Radial
80
8 1/2" (216 mm)
2" (50 mm) 130
3 1/2" (88.9 mm)
260 390
ROOM CAVITY RATIO
1 3/4" (37.5 mm)
520 REPORT NO: LRL 300-1R CATALOG NO: LSB14D28 LAMPS: 1 F28T-5 LUMENS: 2610 EFFICIENCY: 84.0%
30
1 3/4" (37.5 mm)
2" (50 mm)
225 150 575
3 1/2" (88.9 mm)
70 0 84 1 77 2 70 3 64 4 59 5 54 6 50 7 46 8 42 9 39 10 37
900 REPORT NO: LRL 300-1F CATALOG NO: LSB24D28 LAMPS: 2 F28T-5 LUMENS: 2610 EFFICIENCY: 82.9%
8 1/2" (216 mm)
2" (50 mm) 325
Finish: Powder coated baked white or aluminum finish.
650
3 1/2" (88.9 mm)
975 1300 REPORT NO: LRL 300-1K CATALOG NO: LSB34D28 LAMPS: 3 F28T-5 LUMENS: 2610 EFFICIENCY: 83.3%
80
3 1/2" (88.9 mm)
455 683 910 REPORT NO: LRL 300-1T CATALOG NO: LSB24D32 LAMPS: 2 F32T-8 LUMENS: 2900 EFFICIENCY: 84.2%
*See page 485 for ordering guide and accessories.
70
50 10 60 50 42 36 31 27 24 20 18 16 14
% LUMINAIRE 28.9 71.1 100.0
Coefficients of Utilization % Effective Ceiling Cavity Reflectance ROOM CAVITY RATIO
228
% LUMINAIRE 24.3 75.7 100.0
50 30 70 50 30 50 30 85 85 76 76 76 60 60 75 72 70 67 64 53 51 66 61 64 59 55 47 44 58 53 58 52 48 42 38 52 46 54 47 42 37 34 46 40 49 42 36 34 30 42 35 46 38 32 30 27 37 31 42 34 28 27 23 34 28 39 31 25 25 21 31 25 36 28 23 23 19 28 22 34 25 20 21 17 20% FLOOR CAVITY REFLECTANCE
30
2" (50 mm)
10 57 47 40 34 29 25 22 19 17 15 14
Wall Reflectance 70 0 85 1 78 2 71 3 65 4 60 5 55 6 51 7 47 8 43 9 40 10 38
8 1/2" (216 mm)
484
50
Coefficients of Utilization % Effective Ceiling Cavity Reflectance
ZONAL LUMEN SUMMARY LUMENS % BARELAMP ZONE 0 - 90 2093 24.1 90 - 180 5157 59.3 0 - 180 7250 53.3
CANDLEPOWER CURVE
LSB-16 2-T-8 Radial 1 3/4" (37.5 mm)
10
50 30 70 50 30 50 30 84 84 75 75 75 57 57 73 70 68 65 63 50 49 65 60 62 58 54 45 42 57 51 57 51 46 40 37 51 45 52 45 40 36 32 45 39 48 41 35 32 28 41 34 44 37 31 29 25 36 30 41 33 27 26 22 33 27 38 30 24 24 20 30 24 35 27 22 22 18 27 22 33 25 20 20 16 20% FLOOR CAVITY REFLECTANCE
ZONAL LUMEN SUMMARY LUMENS % BARELAMP ZONE 0 - 90 1167 20.1 90 - 180 3643 62.8 0 - 180 4810 82.9
CANDLEPOWER CURVE
LSB-15 3-T-5 Radial
1 3/4" (37 mm)
% LUMINAIRE 26.3 73.7 100.0
Wall Reflectance
8 1/2" (216 mm)
ROOM CAVITY RATIO
LIGHTING SYSTEMS
Reflector: Precision die-formed semi-specular aluminum. Solid Steel: 20 gauge die-formed steel. Finished to match housing. Radial Louver: Precision die-formed aluminum straight blade louver, blades are 5/8” high and 5/8” O.C. with 7” radial for aesthetic appeal. Electrical: Ballast is <10% THD, .98 ballast factor, pre-heat start. 3 conductor, 18 gauge wire. Colorcoded quick connectors. Power feed is 18 gauge white SJT. Dimming - 120/277 VAC 1% dimming level, 4 wire feed required. Cable suspension: 4 1/2" diameter canopy finished white enamel, 1/16" diameter stainless steel aircraft cable adjustable up to 36." Dualscrew draw-tight connector to create hairline seam between joiner modules.
10 59 49 41 35 30 26 23 20 17 15 14
Coefficients of Utilization % Effective Ceiling Cavity Reflectance
CANDLEPOWER CURVE
LSB-14 2-T-5 Radial
Lamping: (28, 54W T-5 or 32W T-8) (as specified) fluorescent lamps
50
50 30 70 50 30 50 30 85 85 76 76 76 59 59 75 72 70 67 64 52 50 66 61 64 59 55 46 44 58 53 58 52 47 41 38 52 46 53 47 41 37 33 46 40 49 42 36 33 29 41 35 45 37 32 30 26 37 31 42 33 28 27 23 33 27 39 30 25 24 20 30 24 36 27 22 22 18 28 22 33 25 20 20 16 20% FLOOR CAVITY REFLECTANCE
ZONAL LUMEN SUMMARY LUMENS % BARELAMP ZONE 0 - 90 641 22.1 90 - 180 1794 61.9 0 - 180 2435 84.0
RAPPORT DE LA CAVITÉ DE LA PIÈCE
Housing: Extruded aluminum. Die-cast end cap mechanically attached with no exposed fasteners or hardware.
70
Wall Reflectance 70 0 85 1 78 2 71 3 65 4 60 5 55 6 51 7 47 8 43 9 40 10 37
10
50
Wall Reflectance 70 0 86 1 78 2 72 3 66 4 60 5 55 6 51 7 47 8 43 9 40 10 38
50 30 70 50 30 50 30 86 86 76 76 76 59 59 75 72 70 67 64 52 51 66 61 64 59 55 46 44 58 53 58 52 48 41 38 52 46 54 47 42 37 33 46 40 49 42 36 33 29 42 35 46 38 32 30 26 37 31 42 34 28 27 23 34 28 39 30 25 24 21 31 25 36 28 23 22 18 28 22 34 25 20 20 17 20% FLOOR CAVITY REFLECTANCE
ZONAL LUMEN SUMMARY LUMENS % BARELAMP ZONE 0 - 90 1296 22.3 90 - 180 3587 61.9 0 - 180 4884 84.2
10 59 49 41 35 30 26 23 20 18 16 14
% LUMINAIRE 26.5 73.5 100.0