exhaust vent size - Modine HDS45

[Sack]

Forgot my manual this morning and wanted to make sure I have everything I need to install my HDS45 this weekend. So can anyone confirm the exhaust vent size is indeed 3"? Thx.

 

[busted knuckle]

Here's a link to the manual. http://www.greenhousekits.com/resources/Modine-HD-Manual.pdf