Thanks for the suggestion. Before ordering anything, I want to make the following comment. The 30" blades currently available are for your right discharge mowers that have been made since 2001. My mower is the old Bachtold Brothers design with left discharge and a blade that rotates counter-clockwise. It seems to me that the currently available blade would not work, even when spun in reverse for left discharge, because of the grind angle. Furthermore, these blades appear not to have the Air Tip feature on blades made for the older style mowers but are flat like the 24" blades made for my brush deck. Wouldn't reversing the direction of rotation of a current model blade create downward rather than upward forces on the clippings? Please correct me if I'm wrong.