
American Series PVC/UPVC Single Hung Sash Window Profile. Superior Weather Resistance: Withstands extreme heat, cold, wind, and rain without corroding, peeling, or chipping. Excellent Thermal Insulation: Heat insulation effect is 1250 times better than aluminum, ensuring energy efficiency. Fire Retardant Performance: Made of quality combustion-retarding material that self-extinguishes and does not support combustion. Customizable Design: Offers customized styles, logos, and packaging details to meet specific client requirements. Low Maintenance Required: Does not corrode, discolor, or get yellow; unaffected by ash, cement, or binding agents. Anti-Aging Properties: UV-resistant raw materials prevent discoloration, aging, or brittleness under direct sunlight. Effective Sound Insulation: Tight joint design provides sound insulation less than 20db, complying with DIN4109.