Now that you have all the needed parts for the cool tube.....

take a moment and lay out the pieces to get a little idea of how it should all work!.....lay the glass tube into the 1ft long piece of duct and lay the bulb inside the glass tube ,this will give you a good eye's view of where everything should be! because you have to make sure your bulb doesn't stick out past the glass tube as well you want to make sure you don't anchor the bulb socket so far into the duct vent that alot of the bulb is to far inside of the duct...