When Maya moves into an old apartment in the city, she installs a sleek uPVC ventilation window to improve airflow. But strange whispers and chilling breezes seem to escape through it at night. As she investigates, she uncovers the building’s hidden past—a lost diary, a vanished tenant, and a mystery buried in time. With each passing day, the window reveals secrets that could change M... https://thegreenfortune.com/product-categories/upvc-ventilation-window/