On 13 Sep 2004 17:46:41 -0700, terry wrote:
Hi,

Thank your for all replies! One more thing, actually I want to do this
for insulating sound, could the methods provided do this?

Thanks!

How much? An "exterior door" might be Good Enough. But if your needs
are more rigorous, you can buy a "sound rated" door that provides X dB
of sound reduction. The prices are a good bit higher.