AG Findings has introduced its new Vent Shell case for the iPhone 4. Made from polycarbonate, the Vent Shell features a one-piece perforated design, soft touch coating, and open access to all ports, controls, and the camera. The Vent Shell is available now in a variety of colors and sells for $20 for one case or $30 in a two-case combo pack, which is available at AT&T stores.