The drain hole transports the grain to the primary lifter (if pre-threshing is required). A dust collection system is installed on the drain hole to prevent dust.

The amount of capacity received by the lifter or the depth limit (areas with surface water) determines the dimensions of the drain hole.It can also be divided into one to four parts that a different product can be drained in each of them if needed. A cover is usually built on the drain hole.The cover structure on the drain hole is selected according to the customer’s order (suitable for trucks or normal).