Retrax Retrax IX - 20-26 Silverado/Sierra 2500HD/3500HD 6'9" Model 30484Retrax Retrax IX 20 26 Silverado Sierra 2500HD 3500HD 6'9" Model 30484 The Retrax IX is a flush mounted retractable tonneau cover constructed of durable aluminum slats linked by a strong elastomer hinge, helping to eliminate the opportunity for water and debris to enter your truck bed. When combined with the UV resistant matte finish powder coat, the cover helps keep your truck bed and cargo protected and secure in the roughest of conditions. The