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 filters air, neutralizes cooking odors, and helps maintain fresh kitchen air. Recommendations: The recirculating air replacement filter is a single-use consumable item. It is recommended to replace it every 6 to 12 months depending on usage and cooking habits. Product size: The active carbon filter measures 193 x 75 x 35 mm and is easy to install. Box contents: 4 replacement filters.