Thermal Performance

Features • Product Description • Thermal Performance
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There are lots of Glazing options to choose from. Choose the order you would like the Energy Ratings to be sorted by (Whichever order is most important to you):

  1. Use for passive solar applications or where heating load reduction is the priority
  2. Use where thermal comfort is the priority
  3. Use where cooling load reduction is the priority

See the American Recomendations (Energy Star) for thermal performance and compare them to the values below!

  1. Glazing Options in Energy Rating (ER) Order
    Use for passive solar applications or where heating load reduction is the priority

Awning window 600mm x 1200mm (approx. 24” x 48”)
-properties will vary with the size of the window

Glass Code*, Low e type and location

Glass Properties

Window Properties

visible

trans.

SHGC

U-value

SHGC

U-value

ER

W/m^2K

Btu/ft^2

W/m^2K

Btu/ft^2
322 LOF EA2, #3,#5

0.63

0.61

0.90

0.16

0.42

1.11

0.19

6

321 LOF EA2, #5

0.68

0.63

1.21

0.21

0.44

1.31

0.23

3

302 HM TC88, #3,#4

0.65

0.51

0.83

0.15

0.36

1.16

0.20

0

404 HM TC88, # 3- #6

0.52

0.42

0.67

0.12

0.29

1.04

0.18

-2

320 None

0.74

0.68

1.68

0.30

0.47

1.63

0.29

-2

321 AFG TiR, #5

0.65

0.47

1.04

0.18

0.33

1.20

0.21

-3

211 LOF EA2, #3

0.75

0.70

1.69

0.29

0.49

1.72

0.30

-3

322 AFG TiR, #2,#5

0.57

0.37

0.71

0.12

0.25

0.98

0.17

-3

321 AFG TiR, #2

0.65

0.43

1.09

0.19

0.30

1.25

0.22

-6

211 AFG TiR, #3

0.71

0.51

1.43

0.25

0.35

1.55

0.27

-9

211 AFG TiR, #2

0.71

0.46

1.43

0.25

0.32

1.55

0.27

-11

201 None (ref. only)

0.81

0.75

2.81

0.49

0.52

2.48

0.42

-17

The Fine Print:

* Glass Code:

1st digit – number of layers of glazing
2nd digit – number of SuperSpacers
3rd digit – number of Low-e coatings and argon gas fills (assumed 90%argon, 10%air)

The number after the Low e manufacturer’s name shows the location of the Low e coatings – surface #1 is the exterior surface.

Window Properties were determined by FRAMEplus5.1, which incorporates VISION.

U-values that conform to ISO 15099 (used in Europe), are typically 10% lower than those stated above and are available on request.

Other types of Low e glass are available on a custom or project basis.

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  1. Glazing Options in U-value Order
    Use where thermal comfort is the priority

Awning window 600mm x 1200mm (approx. 24” x 48”)
-properties will vary with the size of the window

Glass Code*, Low e type and location

Glass Properties

Window Properties

visible

trans.

SHGC

U-value

SHGC

U-value

ER

W/m^2K

Btu/ft^2

W/m^2K

Btu/ft^2
322 AFG TiR, #2,#5

0.57

0.37

0.71

0.12

0.25

0.98

0.17

-3

404 HM TC88, #3- #6

0.52

0.42

0.67

0.12

0.29

1.04

0.18

-2

322 LOF EA2, #3,#5

0.63

0.61

0.90

0.16

0.38

1.11

0.19

6

302 HM TC88, #3,#4

0.65

0.51

0.83

0.15

0.36

1.16

0.20

0

321 AFG TiR, #5

0.65

0.47

1.04

0.18

0.33

1.20

0.21

-3

321 AFG TiR, #2

0.65

0.43

1.09

0.19

0.30

1.25

0.22

-6

321 LOF EA2, #5

0.68

0.63

1.21

0.21

0.44

1.31

0.23

3

211 AFG TiR, #3

0.71

0.51

1.43

0.25

0.35

1.55

0.27

-9

211 AFG TiR, #2

0.71

0.46

1.43

0.25

0.32

1.55

0.27

-11

320 None

0.74

0.68

1.68

0.30

0.47

1.63

0.29

-2

211 LOF EA2, #3

0.75

0.70

1.69

0.29

0.49

1.72

0.30

-3

201 None (ref. only)

0.81

0.75

2.81

0.49

0.52

2.48

0.42

-17

The Fine Print:

* Glass Code:

1st digit – number of layers of glazing
2nd digit – number of SuperSpacers
3rd digit – number of Low-e coatings and argon gas fills (assumed 90%argon, 10%air)

The number after the Low e manufacturer’s name shows the location of the Low e coatings – surface #1 is the exterior surface.

Window Properties were determined by FRAMEplus5.1, which incorporates VISION.

U-values that conform to ISO 15099 (used in Europe), are typically 10% lower than those stated above and are available on request. Bold font indicates stocked Low e glass types.

Other types of Low e glass are available on a custom or project basis.

Back to the top

  1. Glazing Options in SHGC Order
    Use where cooling load reduction is the priority

Awning window 600mm x 1200mm (approx. 24” x 48”)
-properties will vary with the size of the window

Glass Code*, Low e type and location

Glass Properties

Window Properties

visible

trans.

SHGC

U-value

SHGC

U-value

ER

W/m^2K

Btu/ft^2

W/m^2K

Btu/ft^2
322 AFG TiR, #2,#5

0.57

0.37

0.71

0.12

0.25

0.98

0.17

-3

404 HM TC88, #3- #6

0.52

0.42

0.67

0.12

0.29

1.04

0.18

-2

321 AFG TiR, #2

0.65

0.43

1.09

0.19

0.30

1.25

0.22

-6

211 AFG TiR, #2

0.71

0.46

1.43

0.25

0.32

1.55

0.27

-11

321 AFG TiR, #5

0.65

0.47

1.04

0.18

0.33

1.20

0.21

-3

211 AFG TiR, #3

0.71

0.51

1.43

0.25

0.35

1.55

0.27

-9

302 HM TC88, #3,#4

0.65

0.51

0.83

0.15

0.36

1.16

0.20

0

322 LOF EA2, #3,#5

0.63

0.61

0.90

0.16

0.38

1.11

0.19

6

321 LOF EA2, #5

0.68

0.63

1.21

0.21

0.44

1.31

0.23

3

320 None

0.74

0.68

1.68

0.30

0.47

1.63

0.29

-2

211 LOF EA2, #3

0.75

0.70

1.69

0.29

0.49

1.72

0.30

-3

201 None (ref. only)

0.81

0.75

2.81

0.49

0.52

2.48

0.42

-17

The Fine Print: 

* Glass Code:

1st digit – number of layers of glazing
2nd digit – number of SuperSpacers
3rd digit – number of Low-e coatings and argon gas fills (assumed 90%argon, 10%air)

The number after the Low e manufacturer’s name shows the location of the Low e coatings – surface #1 is the exterior surface.

Window Properties were determined by FRAMEplus5.1, which incorporates VISION.

U-values that conform to ISO 15099 (used in Europe), are typically 10% lower than those stated above and are available on request. Bold font indicates stocked Low e glass types.

Other types of Low e glass are available on a custom or project basis.

Back to the top