Amazon.com: Compatible with 2014 - UP Chevy Silverado Crew Cab Truck Dual 12" Sub Box Subwoofer Enclosure : Electronics
2014 Silverado Dual 10" Ported subwoofer box
JL Audio Stealthbox® Custom-fit fiberglass enclosure with 10" TW1 subwoofer — fits 2014-up Chevrolet Silverado/GMC Sierra Crew Cab at Crutchfield
Amazon.com: 2014-2018 Chevy Silverado/GMC Sierra Crew Cab Dual 10 Downfire with Amp Space Sub Box Charcoal Gray : Electronics
Amazon.com: Compatible with 2014 2015 2016 2017 2018 2019 GMC Sierra Crew Cab Alpine S-W12D4 Type S Car Audio Subwoofer Single 12" Custom Sub Box Enclosure Package : Electronics
Amazon.com: 2014-2018 Chevy Silverado/GMC Sierra Crew Cab Dual 10 Downfire with Amp Space Sub Box Charcoal Gray : Electronics
2014-2018 Chevy Silverado/GMC Sierra Crew Cab Dual 12" Sub Box | Skar Audio
Amazon.com: 2014-2018 Chevy Silverado/GMC Sierra Regular Cab Subwoofer Box with Amp Space : Electronics