Low-E Information & Specifications
There are may confusions about Low-E itself . There are Two types of Low-E that are the most popular and widely used in both residential and commercial glass. Low-E means (Low Emissivity) an it is not a tint or film, it is multiple layers of metallic particles on the inner pane of a double pane glass aka Insulated Glass Unit (IGU). Not all manufactures provide same specs but they all come very close to each other. This page will focus on the informative and specifications area of low-E in a short and detailed list.
A few common alias’s or AKA’s for Soft Coat Low-E are: 272, LoE2 , LowE-2, Lowe2, Cardinal Glass, Cardinal Low-E, 272 LowE. All mean the same thing and have the same specs as “Soft Coat Low-E”.
This is the most common standard glass available, Low-E 272 delivers year-round comfort, reflecting an intermediate level of heat back into the room in winter and rejecting the sun’s heat and uv rays in summer. This product’s patented coating provides clarity and high-performance low-solar control, reducing window heat gain by 50% compared to ordinary glass. Soft Coat Low-E / 272 has a slight noticeably “Greenish/Teal” color hue.
| Type | Trans- mittance | Ext Reflective | Int Reflective | UV | ISO | Heat Gain Coefficient | U Factor Air Filled | U Factor Argon Filled |
|---|---|---|---|---|---|---|---|---|
| 272 Soft Coat Low-E2 | 72% | 11% | 12% | 0.16 | 0.55 | 0.41 | 0.30 | 0.25 |
A few common alias’s or AKA’s for Soft Coat Low-E are: 366, LoE3, LoE3 , LowE-3, Lowe3, Cardinal Glass, Cardinal Low-E3, 366 LowE. All mean the same thing and have the same specs as “Hard Coat Low-E”.
This is the ultimate performance glass, Hard Coat Low-E 366 provides the highest levels of year-round comfort and greatest energy savings. Its patented coating offers an ideal balance of solar control and high visibility. Blocking up to 95% of the sun’s damaging rays. Hard Coat Low-E / 366 glass does have a more darker hue compared to the Soft Coat Low-E 272, which may be commonly described as a more “Greenish or Teal” tint
| Type | Trans- mittance | Ext Reflective | Int Reflective | UV | ISO | Heat Gain Coefficient | U Factor Air Filled | U Factor Argon Filled |
|---|---|---|---|---|---|---|---|---|
| 366 Hard Coat Low-E2 | 65% | 11% | 12% | 0.05 | 0.43 | 0.27 | 0.29 | 0.24 |