Energy Rating Information
The tables below show the most commonly requested energy information for our Window and Door range
At Spectral Online, our energy-efficient double and triple glazed windows significantly reduce heating costs, enhance home comfort, minimize noise pollution, and lower carbon emissions, ensuring a greener future.
If you click on the links below you can download the U value documents and Glass data sheets for our most commonly requested products. The glass data sheets contain the centre pane, ‘g’ Value and also the DB rating for the sealed unit.
PVCu Double Glazed
|
Casements |
4/20/4 Total+ |
Glass Sheet |
4/20/4 Plan One |
Glass Sheet |
4/20/4 Ultra N |
Glass Sheet |
6.8/18/4 Lam T+ |
Glass Sheet |
6.8/18/4 Silence T+ |
Glass Sheet |
|---|---|---|---|---|---|---|---|---|---|---|
| Deceuninck Storm | ||||||||||
| 2500 & 2800 | 1.4 | 0.7 | 1.3 | 0.52 | 1.3 | 0.63 | 1.4 | 0.66 | 1.4 | 0.66 |
| Deceuninck Flush | ||||||||||
| 2800 | 1.4 | 0.7 | 1.2 | 0.52 | 1.3 | 0.63 | 1.4 | 0.66 | 1.4 | 0.66 |