DFS-75V
It is a type of door closer that is installed into the floor, hidden from view, to automatically close a door after it has been opened. It is designed for medium-sized doors, offering a balance between durability and performance. The "75V" typically refers to the strength and capacity of the floor spring, meaning it can handle doors of moderate weight. The floor spring operates quietly and smoothly, making it ideal for spaces that require a clean, sleek look while ensuring the door closes securely.