Introducing the Smallaire Venturi System: The Future of Grain Bunker Storage! Say goodbye to tarp flapping causing costly repairs! The Smallaire Venturi system creates a vacuum effect at low and high wind speeds, securing the tarp firmly without extra hardware. This breakthrough protects grain from storm damage and reduces maintenance costs—keeping bunkers safe and efficient. Tested in the Wimmera and South Australian regions, this system has delivered outstanding results, holding tarps steady even during out loading.