Basic Parameters: Recommended area ≤2.5㎡; profile wall thickness 1.5mm
Core Configuration: Frame built-in patented balancer, arbitrary height hovering, bottom-frame-free design available, equipped with broken bridge heat insulation structure
Opening Mode: Dual lifting, double sash inward tilting
Product Advantages: Upgraded broken bridge sound insulation and heat insulation functions based on the standard Model 83, meeting household mute and thermal insulation requirements.
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