General description vhbw offers a set of 2 motor filters designed for various vacuum cleaner models, including standard, robotic, wet, and multipurpose types. Regular replacement of these filters is essential for optimal dust extraction and to protect the motor from impurities, thereby extending the vacuum cleaner's lifespan while maintaining high suction power. Technical specifications Material: microfleece / plastic Form: rectangular Height: 1.45 cm Width: 9.8 cm Length: 14 cm Colour: white / light blue Weight: 23 g Compatibility and accessories Compatible with Bosch models: BGB21550 BGB21552 BGB2B111 BGL21328GB BGL252000 BGB2X111 BGB2KFL Replacement for Bosch part number: 00577814 Usage It is recommended to change the filters every 6 to 12 months or when the vacuum cleaner's cleaning efficiency decreases.