GMC Yukon Denali Sub Enclosure Kicker L7 Behind 3rd Row Subwoofer Speaker BoxThis Box will fit all Yukons including Denali's. behind the 3rd row Listing is for black vinyl, single 12", and ported Other colors available upon request Different text or logo available upon request Speaker mounting depth of 8. 5" (8 1 2") Box can also be made for 1, 2, or 3 subs 8", 10" and 15" round or square subs Can be made sealed Black carpet in the back Charcoal carpet available upon request Screw on speaker terminals included Box can be