How many fasteners are required for narrow ventilators?

For narrow ventilators, the correct requirement is three fasteners. This specification is based on the need for adequate support and secure installation of the ventilator to ensure it functions effectively and maintains integrity during transport. The use of three fasteners helps distribute the load more evenly and provides a more stable installation than fewer fasteners would allow. This method minimizes the risk of loosening or damage during the operational use of the dry van, thus enhancing safety and performance in the transportation of goods. The choice of three fasteners aligns with industry best practices for ensuring ventilation components are adequately secured within the structure of the dry van.