Based on this product's specifications, here are some alternatives and similar models
Rear Top Plate (Fan) for Flashforge GUIDER3+ — Replacement Part MPN 70002170003
Summary description:
Replacement rear top plate with fan for the Flashforge GUIDER3+ 3D printer, original part MPN 70002170003 (EAN 6937120306283). Designed to fit the GUIDER3+ chassis, it restores cooling and enclosure airflow where the factory top plate is damaged or worn. Suitable for maintenance, repairs, and restoring proper ventilation to ensure consistent printing conditions.