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

Para-Lite 3 HIGH EFFICIENCY DOUBLE WEDGE DESIGN

Specifications

Parabolic Louvers shall be Para-Lite 3 as manufactured by A.L.P. Lighting & Ceiling Products, Inc., and shall be one piece injection molded with a double wedge design of polystyrene or acrylic with all parabolic surfaces prepared with a primary undercoat, highly specular vacuum metalized finish. Cell dimensions shall be 3/4" x 3/4" x 1/2" and shall provide 35° shielding with a louver efficiency of not less than 66%. This louver has a VCP index rating of .93 (specular silver finish). Available in nominal ceiling panel sizes of 1' x 4', 2' x 2' and 2' x 4' or flanged panels with I.D. of 19-11/16 x 43-1/2", O.D. of 22-1/2" x 46-1/2".

Lighted Ceilings - Louver panels are designed to fit any standard 1' x 4', 2' x 2' or 2' x 4' tee bar grid system.

Special Sizes - Special sizes are available, contact A.L.P.

Flanged Style - Panels will sometimes require additional cutting for proper installation.

Lighting Fixtures - Louver panels can also be specified with the Avoida-Notch™ optional frame - to specify add suffix-AN50 to the base catalog number. For specular finish use SP. The color designation should follow SP (i.e., SPS for specular silver).

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	79	79	79	79	77	77	77	77	74	74	74	71	71	71	68	68	68	66
1	74	72	70	68	73	71	69	67	68	66	65	65	64	63	63	62	61	60
2	70	66	63	60	68	35	62	59	63	60	58	61	59	57	59	57	56	54
3	65	60	57	53	64	59	56	53	58	55	52	56	53	51	54	52	50	49
4	61	55	50	47	60	54	50	47	52	49	46	51	48	45	50	47	45	44
5	57	50	45	41	55	49	45	41	48	44	41	47	43	40	45	42	40	39
6	52	45	40	37	51	45	40	37	43	39	36	42	39	36	41	38	36	35
7	48	41	36	32	47	40	35	32	39	35	32	38	35	32	38	34	31	30
8	45	37	32	28	44	36	32	28	36	31	28	35	31	28	34	30	28	27
9	41	33	28	25	41	33	28	25	32	28	25	32	28	25	31	27	25	24
10	37	29	24	21	37	29	24	21	28	24	21	27	23	21	27	23	20	19

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	91	84	79	86	91	85	77	83
20	30	93	88	82	80	94	88	82	78
20	40	95	90	85	82	95	90	86	82
20	60	96	92	88	85	96	92	88	85

30	20	94	88	81	83	94	88	79	81
30	30	95	91	83	79	96	91	83	78
30	40	97	93	86	81	97	93	87	81
30	60	98	94	89	84	98	94	89	84
30	80	98	95	90	86	98	95	91	86

40	20	95	91	84	84	96	91	83	82
40	30	97	93	86	80	97	93	86	79
40	40	98	95	89	82	98	95	89	82
40	60	99	96	91	85	99	96	91	85
40	80	99	97	92	87	99	97	93	87
40	100	100	97	93	89	100	97	94	89

60	30	98	95	88	82	98	95	88	82
60	40	99	96	91	84	99	96	91	84
60	60	99	97	92	87	100	97	93	87
60	80	100	98	94	89	100	98	94	89
60	100	100	98	95	90	100	98	95	90

100	40	100	98	93	88	100	98	93	88
100	60	100	98	95	90	100	98	95	90
100	80	100	99	96	92	100	99	96	92
100	100	100	99	97	93	100	99	97	93

TS: TECHNICAL SUPPORT

Lighting Research Laboratories, Inc.

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

Description: Commercially Available 2' x 4' Troffer

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

Luminary Watts = 60.2,

Catalog Number: Louver PL3 24 SPS

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

* Other testing results available upon request.

Total Luminaire Efficiency:		66.3%
Plane:	0°	90°
Spacing Criteria:	1.3	1.4
Shielding Angles:	35	35

CEILING STYLE

CATALOG NO.	DESCRIPTION	DIMENSION
PL3/2 14SPS	SPECULAR SILVER	11-3/4" X 47-3/4"
PL3/2 22SPS	SPECULAR SILVER	23-3/4" X 23-3/4"
PL3/2 24SPS	SPECULAR SILVER	23-3/4" X 47-3/4"

FLANGE FIXTURE STYLE (2' X 4' ONLY)

CATALOGE NO.	DESCRIPTION	INSIDE DIMENSION	OUTSIDE DIMENSION
PL3/1 24SPS	SPECULAR SILVER	19-11/16" x 43-1/2"	22-1/2" X 46-1/2"

Products listed above are polystyrene. For Acrylic Louvers, add A after catalog number. Also available in Semi-Specular Silver. To order, replace SPS with SSS. DURABOLIC Finish available on Specular Silver. To order, replace SPS with DSPS.

ZONAL LUMEN SUMMARY

ZONE	LUMENS	% LAMP	% FIXT
0-30	1348	22.1	33.3
0-40	2256	37.0	55.8
0-60	3960	64.9	98.0
0-90	4043	66.3	100.0
90-180	0	0.0	0.0
0-180	4043	66.3	100.0

LUMINANCE DATA IN FOOTLAMBERTS

ANG. IN DEG.	AVG. 0-DEG.	AVG. 45-DEG.	AVG. 90-DEG.
45	2417	2815	3126
55	2132	2561	2246
65	335	412	77
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	1652	1652	1652	1652	1652
5.0	1643	1645	1645	1650	1644	157
15.0	1609	1616	1618	1654	1683	463
25.0	1491	1501	1574	1642	1649	728
35.0	1309	1371	1444	1527	1574	908
45.0	1051	1136	1224	1317	1359	945
55.0	752	816	903	894	792	759
65.0	87	107	107	64	20	82
75.0	0	0	0	0	0	0
85.0	0	0	0	0	0	0
90.0	0	0	0	0	0

ALP Lighting - Page 12