Compatible with extractor hood models for , , Neff, Gaggenau, and Constructa, such as HZ9VRCR0 17004796, 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 neutralizing cooking odors, helping to 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 easy to install. Box contents: 4 replacement filters. Please verify the product dimensions and specifications in the title and images to ensure compatibility with your appliance. For any questions regarding the product, please contact customer support through Amazon’s messaging system. We aim for complete customer satisfaction and are available to assist with any concerns.