The Metal Fan Blade Has 5 Blades and 12" Diameter,Fits for 1/2" shaft, 32 degree pitch, And has set screw Goes clockwise viewing hub side.
Superior Material:The FB99100 Attic Fan is made from superior materials that make the product stronger, last longer, and pass our rigorous testing so you don't have to worry about it not working.
Easy Installation:Installation is very easy and takes only a few minutes, please turn off the power and air source of the unit before installation.You can also search for related videos on YouTube.
Correct Match: this is a great replacement for an old fan and works great.
