Correctly working air circulation is required for people and animals for breathing fresh air. It is especially important in buildings with chemicals or cigarette smoke. This product is focused on jkitchen air circulation.Specifications: - Internal dimensions: 130x200mm; - External dimensions: 165x235mm; - Pipe diameter: 100mm; - Aesthetic end of the ventilation system; - Anti-insect net; - Quick and easy disassembly.