Fan Blade For Fan-Tastic Vent Models 4000R and 5000RBT; Clear; 12 Inch; 10 Blade THIS BLADE IS COMPLETELY PLASTIC WITH ONE SCREW IN THE MIDDLE THAT RETAINS THE BLADE ONTO THE MOTOR IT DOES NOT HAVE THE ALUMINIUM HUB WITH THE SMALL ALLEN KEY GRUB SCREW (THIS TYPE IS NO LONGER AVAILABLE)