Classic contours of the frame are designed to match the size and appearance of our casement and awning windows for an attractive and consistent look and operational versatility for your home.
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) |
LF_IS_CLRCARD-ARG90-CARD180#3_3MM | 1.55 | 0.52 | 36 | 1|2|3 | ABCD | 2 | NR9161-12601955-ES | W535-1 | 0.27 | 0.6 | 0.01 | 0 |
LF_IS_CLRCARD-ARG90-CARD180#3_4MM | 1.54 | 0.51 | 36 | 1|2|3 | ABCD | 2 | NR9161-12601959-ES | W535-1 | 0.27 | 0.6 | 0.01 | 0 |
LF_IS_CLRCARD-ARG90-CARD180#3-ARG90-CLRCARD_3MM | 1.23 | 0.48 | 41 | 1|2|3 | ABCD | 3 | NR9161-12601963-ES | W535-1 | 0.22 | 0.55 | 0.01 | 0 |
LF_IS_CLRCARD-ARG90-CARD180#3-ARG90-CLRCARD_4MM | 1.24 | 0.47 | 40 | 1|2|3 | ABCD | 3 | NR9161-12601967-ES | W535-1 | 0.22 | 0.54 | 0.01 | 0 |