So, probably you have noticed that multiple window manufacturers work out of the same glass catalog. For example Inline is evidently the same as Cascadia; they and Marvin seem to both use Cardinal glass, the best of which is a feeble R6-ish.
The International Glazing Database (current version 18.0), used by the Window 5 software from
windows.lbl.gov, lists 3700+ types of glass from manufacturers worldwide. Regrettably these 3700 are not glass "units" or "packages" consisting of multiple panes, but rather the individual panes with different thickness, coatings, etc.
Nevertheless, some of the manufacturers we know make multi-pane units. There are just 65 unique manufacturer names in the database. I list them here in the hopes that some one will please call all of these birds and ask them: what multi-pane glass package do they offer (if any) which has the highest ratio of Solar Heat Gain Coefficient to U-value, and what are those values, center-of-glass. Please post their answers here.
Regards,
Graham S. Wright
| 3M Corporation |
| A & B Films Pte Ltd |
| AGC Flat Glass (Dalian) Co. |
| AGC Glass Co. N.A. |
| AGC Glass Europe |
| Architectural Glass and Aluminum |
| arcon |
| ARTSCAPE |
| Asahimas |
| ATOFINA Chemicals |
| Bekaert Specialty Films |
| Cardinal Glass Industries |
| China Southern Glass (CSG) |
| Commonwealth Laminating and Coating |
| CPFilms Inc. |
| Cytec Surface Specialties |
| DuPont |
| Energy Saving Products of FL |
| Euroglas GmbH |
| G.James Australia |
| General Electric Company |
| Generic |
| George Fether and Co |
| Glas Trösch AG |
| GlassLam |
| Grand Engineering Glass |
| GSA |
| Guardian |
| Guardian Europe |
| Guardian Latin America |
| Guardian Middle East |
| Hanita Coatings |
| Hankuk Glass Industries Inc. |
| Imperial/Sicotherm |
| INTERPANE GLAS INDUSTRIE AG |
| Johnson Laminating & Coating |
| KCC CORPORATION |
| Madico Inc. |
| Oldcastle Glass® |
| PGT Industries |
| Pilkington |
| Pilkington North America |
| PPG Industries |
| RCR International Inc. |
| SAGE Electrochromics |
| Saint-Gobain Glass |
| Sekisui Chemical Co. |
| Serious Materials Inc. |
| SHANGHAI YAOHUA PILKINGTON GLASS CO. |
| Sheffield Plastics |
| Sketch Incorporated of Japan |
| Solamatrix |
| Solutia |
| Southwall Technologies |
| Specialty Coatings & Chemical |
| Toyohozai |
| TROSIFOL |
| Viracon |
| Viridian |
| Visionwall |
| Vitro |
| Vitrum Industries |
| XYG Glass |
| Yantai Jialong Nano Industry Co. |
| Zeledyne |