INDUSTRIAL COOLING PROCUREMENT Review an enclosure fan sample before approving a purchase Use this checklist to keep sample measurements tied to the panel drawing, filter and fan model used to decide which assembly to order. Match the sample to the quote Record the full part number, electrical variant and drawing revision. Check the housing, mounting holes, airflow arrow and connector against the intended installation. Photograph the label and any discrepancy. Assemble the production configuration Use the proposed guard and filter, and close the cabinet as it will operate. Check the connector clearance, cable routing and filter removal path before running the sample. Record the operating point Record the supply, speed command, installed accessories and airflow and pressure measurement points. Compare the readings with the requirement and the curve for the exact variant. Attach any unresolved fit or airflow question to the purchase review. Find candidate series in the Hongbo Motor industrial cooling fan catalog and request the drawing and curve for each quoted variant. This procurement resource was prepared for Hongbo Motor.