It's a 9 inch woofer.
You can find out which stereos are compatible with an edge subwoofer on crutchfield.com/S-yHDdnz5d860/carsystems/Ford-Edge-Stereos-and-Speakers.html
10 in. subwoofer
8in Subwoofer from 02-05 explorers
The size of subwoofer is 8 inch
The 2010 Ford Edge has a V6 engine.
The 2014 Ford Edge has a V6 engine.
The 2013 Ford Edge has a V6 engine.
The 2007 Ford Edge has a V6 engine.
The 2009 Ford Edge has a V6 engine.
The 2008 Ford Edge has a V6 engine.
The 2011 Ford Edge has a V6 engine.
The 2012 Ford Edge has a V6 engine.