Danaplon glazing - Glass or Trans?

What would the best way be to model Danaplon translucent material (http://www.danpalon.com)

For example the 4mm (http://www.danpalon.com/eng/home/portfolio/03/default.asp?ContentID=111):

Walls - *1*

Thermal insulation factor - *5.36* W/m2°C
Moment of Inertia with U Connector - *7.4x10^5 * mm^4 /m
Minimum cold bending radius - *2.9* meter
Panel width - 592mm
Module width (with spacer) - 600mm
Optical properties:

Clear

Ice

Opal

Bronze

Blue

Green

Grey

Reflective

Visible Light
Transmission

89%

55%

40%

38%

64%

75%

41%

20%

Solar Heat
Gain Coefficient

0.81

0.61

0.48

0.50

0.75

0.72

0.58

0.28

My attempts:

···

#
# Translucent Sheeting Danpalon_Sheeting_Opal_4mm
#
void trans Danpalon_Sheeting_Opal_4mm
0
7 0.4 0.4 0.4 0 0.02 1 0

#
# Danpalon_Sheeting_Opal 40% light transmittance
#
void glass Translucent_Glass_Danpalon_Sheeting_Opal_4mm
0
3 0.43621868 0.43621868 0.43621868

I would assume that the thicker products (more walls) should not be modelled as glass but maybe via the optics program, though I have no idea how/what to feed that program.

Unfortunately the manufacturer has very little technical information available.
--
Regards
*Terrance McMinn*