ALP LIghting (ALP Lighting & Ceiling Products, Inc.)

Para-Lite 2

1-1/2" x 1-1/2" 1" - Styles 1, 2 & 3

Specifications

(Style 1 & 3 - Fixture Style)

Parabolic Louvers shall be Para-Lite 2 (Styles 1 and 3) for lighting fixture application, as manufactured by A.L.P. Lighting & Ceiling Products, Inc. These louvers shall be one piece injection molded of polystyrene or acrylic base material with all parabolic surfaces prepared with a primary undercoat and a highly specular vacuum metalized finish. Louver panels shall have an integrally molded flange on all sides to fit 2' x 2' or 2' x 4' fluorescent fixtures. Cell size: 1-1/2" x 1-1/2" x 1" square cell, providing 38° shielding from all angles. This louver shall have an efficiency of not less than 52% and a VCP index rating of .91 (specular silver finish). Sizes are nominal. Please check customer service for exact sizes of each style.

Style 2 - Ceiling Style

Style 2 is designed to fit any standard 1' x 4', 2' x 2' and 2' x 4' grid systems. Specifications same as styles 1 and 3 excluding flange.

Specular Finish

CATALOG NO.	DESCRIPTION	NOMINAL SIZE
PL2 14SPS**	SPECULAR SILVER	1' x 4'
PL2 22SPS**	SPECULAR SILVER	2' x 2'
PL2 24SPS**	SPECULAR SILVER	2' x 4'

Translucent White (Ceiling Style) - style 2 (Acrylic Only)

CATALOG NO.	DESCRIPTION	NOMINAL SIZE
PL2 14TWR	TRANSLUCENT WHITE ACRYLIC	1' x 4'
PL2 22TWR	TRANSLUCENT WHITE ACRYLIC	2' x 2'
PL2 24TWR	TRANSLUCENT WHITE ACRYLIC	2' x 4'

Product listed above are polystyrene, except for PL2/2 TRW.

For Acrylic Louvers, add A after catalog number. DURABOLIC Finish available on Specular Silver only. To order, replace SPS with DSPS. For other finishes replace SPS with SPG for Specular Gold* or SSS for Semi-Specular Silver.

*DURABOLIC Finish is standard on Specular Gold.

** To specify Style, prefix should read PL2/1 for Style 1, PL2/2 for Style 2 or PL2/3 for Style 3.

ZONAL CAVITY COEFFICIENTS OF UTILIZATION

Ceiling Wall RCR	EFFECTIVE FLOOR CAVITY REFLECTANCE = 20
	80				70				50			30			10			00
	70	50	30	10	70	50	30	10	50	30	10	50	30	10	50	30	10	00
0	62	62	62	62	60	60	60	60	58	58	58	55	55	55	53	53	53	52
1	59	57	56	54	57	56	55	53	54	53	52	52	51	50	50	49	49	48
2	55	53	50	49	54	52	50	48	50	48	47	49	47	46	47	46	45	44
3	52	49	46	44	51	48	45	43	47	45	43	45	44	42	44	43	41	41
4	49	45	42	39	48	44	41	39	3	40	38	42	40	38	41	39	37	37
5	46	41	38	35	45	41	37	35	40	37	35	39	36	34	38	36	34	33
6	43	38	34	32	42	37	34	32	36	33	31	36	33	31	35	33	31	30
7	40	34	31	28	39	34	31	28	33	30	28	33	30	28	32	30	28	27
8	37	31	28	25	36	31	27	25	30	27	25	30	27	25	29	27	25	24
9	34	28	25	22	34	28	25	22	27	24	22	27	24	22	26	24	22	21
10	31	24	21	18	30	24	21	18	24	20	18	23	20	18	23	20	18	17

VISUAL COMFORT PROBABILITY TABLE

100 FC Work Plane Illumination Work Plane FC = 100

		LUMINARIES LENGTHWISE				LUMINARIES CROSSWISE
ROOM DIM		MOUNTING HEIGHT
W	L	8.5	10	13	16	8.5	10	13	16
20	20	99	98	93	91	98	96	89	86
20	30	100	99	95	92	99	97	92	87
20	40	100	100	97	94	100	98	94	90
20	60	100	100	98	95	100	99	96	92

30	20	100	99	94	91	100	98	91	87
30	30	100	100	96	92	100	99	94	88
30	40	100	100	98	94	100	100	96	91
30	60	100	100	99	95	100	100	97	93
30	80	100	100	99	96	100	100	98	94

40	20	100	100	96	92	100	99	93	89
40	30	100	100	98	93	100	100	96	90
40	40	100	100	99	95	100	100	97	92
40	60	100	100	100	96	100	100	98	94
40	80	100	100	100	97	100	100	99	95
40	100	100	100	100	98	100	100	99	96

60	30	100	100	99	94	100	100	97	92
60	40	100	100	100	96	100	100	98	94
60	60	100	100	100	97	100	100	99	95
60	80	100	100	100	98	100	100	100	96
60	100	100	100	100	99	100	100	100	97

100	40	100	100	100	98	100	100	99	96
100	60	100	100	100	99	100	100	100	97
100	80	100	100	100	99	100	100	100	98
100	100	100	100	100	100	100	100	100	99

TS: TECHNICAL SUPPORT

Lighting Research Laboratories, Inc.

Test Report No. LRL 397-3K, Date 3/5/97.

Description: Commercially Available 2' x 4' Troffer

2/32W T8 Lamps, 1/2" deep Parabolic Specular Silver Louver.

Luminary Watts = 60.0,

Catalog Number: Louver PL2 SPS 3

Lamp Type: F32T8/TL80, Lumens: 3050, Number of Lamps: 2

* Other testing results available upon request.

Total Luminaire Efficiency:		51.9%
Plane:	0°	90°
Spacing Criteria:	1.2	1.6
Shielding Angles:	31	31

Visit our Web Site at WWW.ALP-LTG.COM

ZONAL LUMEN SUMMARY

ZONE	LUMENS	% LAMP	% FIXT
0-30	1195	19.6	37.7
0-40	2050	33.6	64.7
0-60	3168	51.9	100
0-90	3169	51.9	100
90-180	0	0.0	0.0
0-180	3169	51.9	100.0

LUMINANCE DATA IN FOOTLAMBERTS

ANG. IN DEG.	AVG. 0-DEG.	AVG. 45-DEG.	AVG. 90-DEG.
45	1989	2805	3188
55	334	1104	782
65	4	4	4
75	0	0	0
85	0	0	0

CANDLE POWER DISTRIBUTION

VER. ANG.	HORIZONTAL ANGLE					ZONAL LUMENS
VER. ANG.	0.0	22.5	45.0	67.5	90.0	ZONAL LUMENS
0.0	1358	1358	1358	1358	1358
5.0	1347	1356	1360	1370	1369	130
15.0	1323	1366	1425	1478	1506	403
25.0	1218	1316	1429	1571	1604	663
35.0	1057	1219	1407	1521	1537	855
45.0	815	1020	1149	1246	1306	867
55.0	111	245	267	321	260	251
65.0	1	1	1	1	0	1
75.0	0	0	0	0	0	0
85.0	0	0	0	0	0	0
90.0	0	0	0	0	0	0

ALP Lighting - Page 15