This is a BRAND NEW ICP/Heil/Tempstar/Comfort Maker/Arcoaire/Sears/Kenmore/Snyder General Condenser Motor Fan Blade.  The part # is 1086519.  It is a 26" 2 blade, 1/2" bore condenser fan blade. The pitch on the blades is 28 degrees.  If the set screw is facing down (as they typically are when installed) rotation would be clockwise.  

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Partial List of ICP/Heil/Tempstar/Comfort Maker/Arcoaire/Sears/Kenmore/Snyder General Units that use this Item: