This is a BRAND NEW Universal Furnace Squirrel Cage / Blower Wheel. It's 7.5 " in diameter, and 9 " tall with a 1/2" bore. If the set screw is facing up (as in the picture), it rotates Clockwise. The center wall of the wheel is Flat with no indentation either way. This wheel is used in all brands of furnaces and is rated for up to 1600 RPM. Thanks for looking and good luck!
Please contact with any questions you have, or any other parts you may need!