Insulated glass should be considered for energy efficiency and comfort in the home. With a combination of two or more panes of glass, a hermetically-sealed air space between them, insulated glass keeps cold air at bay.
Inert gases, such as argon or krypton, may “fill” the space between panes to improve thermal performance and energy savings.
Model | U-factor (W/m² – K) | Solar Heat Gain (SHGC) | Energy Rating | ENERGY STAR Zone(s) 2015 | ENERGY STAR Zone(s) 2010 | Layers of Glazing | NRCan Reference | Energy Efficiency Verification Reference | U-factor (Btu/h/ft² – °F) | Visible Transmittance | Air Leakage – Infiltration (l/s*m²) | Air Leakage – Exfiltration (l/s*m²) |
SF_IS_CLRCARD-ARG90-CARD180#3_3MM | 1.59 | 0.59 | 39 | 1|2|3 | ABCD | 2 | NR9161-12601971-ES | W535-1 | 0.28 | 0.68 | 0.01 | 0 |
SF_IS_CLRCARD-ARG90-CARD180#3_4MM | 1.57 | 0.57 | 39 | 1|2|3 | ABCD | 2 | NR9161-12601975-ES | W535-1 | 0.28 | 0.67 | 0.01 | 0 |
SF_IS_CLRCARD-ARG90-CARD180#3-ARG90-CLRCARD_3MM | 1.23 | 0.54 | 44 | 1|2|3 | ABCD | 3 | NR9161-12601979-ES | W535-1 | 0.22 | 0.62 | 0.01 | 0 |
SF_IS_CLRCARD-ARG90-CARD180#3-ARG90-CLRCARD_4MM | 1.24 | 0.52 | 43 | 1|2|3 | ABCD | 3 | NR9161-12601983-ES | W535-1 | 0.22 | 0.61 | 0.01 | 0 |