GreenFortune’s uPVC Double-Hung Window is designed with two vertically sliding sashes, ensuring superior ventilation, easy cleaning, and minimal upkeep. Its balanced structure and multi-chambered profile enhance energy efficiency, sound insulation, and weather resistance. Built for durability, the window features sturdy uPVC profiles, multi-point locking systems, and internal reinforc... https://thegreenfortune.com/product-categories/upvc-double-hung-window/