The ORION FANS part OD4020-24HB is a high-quality DC fan that measures 40mm x 40mm x 20mm in size. With a voltage rating of 24V and a ball bearing construction, this fan is designed to provide efficient cooling for various electronic and industrial applications. Despite its small size, it offers a commendable airflow of 9 cubic feet per minute (cfm), helping to maintain optimal operating temperatures. Trustworthy and dependable, the OD4020-24HB fan from ORION FANS is an excellent choice for reliable cooling in compact spaces.