Compatible with extractor hood models for Bosch, Siemens, Neff, Gaggenau, and Constructa, such as Siemens HZ9VRCR0 17004796, Bosch HEZ9VRCR0 17004805, Neff Z821VR0 17004806, Gaggenau CA282111, and Constructa CZ9VRCR0 17006669. Refer to the image for compatible models. Functionality: The activated carbon filter efficiently purifies the air by capturing odors and impurities generated during cooking, helping maintain fresh air in the kitchen. Recommendations: The recirculating air activated carbon filter is a consumable item designed for periodic replacement. It is recommended to replace the filter every 6 to 12 months based on usage frequency. Product size: Each active carbon filter measures 193 x 75 x 35 mm and is simple to install. Box contents: 4 replacement filters. When purchasing, please verify the dimensions and specifications to ensure compatibility with your appliance. Detailed product information, including features and compatibility, is provided in the title and specifications. For any questions regarding the product, please contact the seller through Amazon’s messaging system. We aim to ensure your satisfaction and are available to assist with any concerns.