Equipped with 44mm multi-chamber imported extra-wide thermal break strips and triple-pane double-cavity Low-E glass, delivering excellent thermal insulation performance with a U-factor (K-value) below 1.6 W/m²·K;
Fully compliant with North American NFRC certification requirements. Featuring triple weather sealing, 2.0mm profile thickness, and NARS-compliant glass, it meets North American AAMA (Hurricane) certification standards;