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1/4" GLASS - 1/2" AIR SPACE - 1/4" GLASS
GLASS
PART NUMBER
GLASS
TYPES
TRANSMITTANCE
REFLECTANCE
U-VALUE
SHADING COEFFI-
CIENT
SOLAR HEAT
GAIN COEFFI-
CIENT
Visible
%
Solar
Energy
%
Visible
Light
%
Total
Solar
Energy
%
Winter
Night-
time
Summer
Daytime
CLEAR Air/Argon Air/Argon  
ISL-89-61 Comfort E2 (2) 73 54 14 13 .34/.30 .35/.30 0.72 0.63
ISL-61-89 Comfort E2 (3) 73 54 15 14 .34/.30 .35/.30 0.79 0.69
GREEN
ISL-62-89
Green (3)
63
33
13
9
.33/.29
.33/.28
0.52
0.45
DARK GREEN
ISL-107-89
Green 2000 (3)
55
24
11
7
.33/.29
.33/.28
0.41
0.35
BLUE GREEN
ISL-66-89
Blue-Green (3)
63
35
13
9
.34/.30
.35/.30
0.54
0.46
ISL-68-89
Caribia™ (3)
56
24
11
7

.34/.30

.35/.30
0.4
0.35
BRONZE
ISL-64-89
Bronze (3)
44
32
8
8
.33/.29
.33/.28
0.53
0.46
GREY
ISL-63-89
Grey (3)
38
30
8
8
.33/.29
.33/.28
0.5
0.43
MEDIUM GREY
ISL-214-89
Optigray® 23 (3)
19
13
6
5
.34/.30
.35/.30
0.28
0.24
DARK GREY
ISL-60-89
Graylite® (3)
11
16
5
6
.37/.30
.35/.30
0.33
0.29
ISL-204-89
Gray 2000 (3)
7
4
4
4
.33/.29
.33/.28
0.18
0.15
BLUE
ISL-102-89
Arctic Blue (3)
46
25
9
7
.37/.30
.35/.30
0.42
0.36
ISL-65-89
Blue (3)
47
32
9
8
.33/.29
.33/.28
0.51
0.44
DARK BLUE
ISL-91-89
Blue 2000 (3)
35
21
7
6
.33/.29
.33/.28
0.37
0.32
AQUA BLUE
ISL-67-89 Azuria™ (3) 56 24 11 7 .34/.30 .35/.30 0.4 0.34
  • Performance data represents center of glass values calculated under the guidelines of LBNL Window 5.2 computer analysis, assuming and air mass of 1.5.
  • Tinted, Reflective and Low-E products may require heat-treating. Consult Insulite
  • (2) - 2nd Surface, (3) - 3rd Surface
  • Pyrolitic (hard-coat) Coating Vacuum Deposited (soft-coat) Coating
  • Products listed under each category may not visually match another product in the same category.
  • Consult Insulite for glass types not listed