The ad says 4".
I wouldnt be able to do the deal until I install my other set up. Aprox 2 weeks. I also just installed them and am not sure if they are too quiet for my taste. I am going to cruise around for a week and determine if I REALLY cant live with them. Still on the fence, but want to have a buyer lined up so I dont have to wait if I go through and sell. I have had 3 offers for 250.00 incl ship, but, I cant do ship included.
My 2009 - With the usual suspects. Incl. - Pat G.