DRIVE BLOCK ASSEMBLY W/NYLON INSERT

The Drive Block Assembly with Nylon Insert is a core mechanical component used in curtain controller machines (such as the AP Airstream GCC3630) to automate ventilation in poultry, swine, and dairy barns.

It acts as the moving "trolley" that travels along a rotating drive screw to pull cables or chains, which in turn open and close wall curtains or ridge vents