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PRECISE DIRECTION CHANGE: The large BirnePower flat duct elbow (Model KP204-24) allows for a smooth horizontal change in direction of your ventilation system by exactly 90 degrees. Ideal for flat, space-saving installation in room corners, on kitchen cabinets, or in suspended ceilings. HIGH-QUALITY ABS MATERIAL: This 90° elbow is made from premium, high-strength ABS plastic. The material is particularly dimensionally stable, shatter-resistant, and resistant to yellowing, ensuring an extremely long service life for your high-performance exhaust system. PRECISION-FIT SYSTEM 204: The elbow is precisely tailored to wide rectangular flat ducts measuring 204 x 60 mm. The well-designed plug-in system ensures a secure, precise, and airtight connection of the large ventilation ducts. AERODYNAMIC DESIGN: The inner contour of the 90-degree elbow has been aerodynamically optimized to keep air resistance and pressure loss as low as possible, even at high airflow rates. This ensures quiet and highly efficient airflow in your duct system. VERSATILE USE: An indispensable fitting for professional and residential ventilation systems. Perfect for connecting high-performance range hoods in the kitchen, air conditioning systems, and supply and exhaust air systems in large living spaces or commercial areas.