Extang serial numbers can be found in the following locations:

• Express & Revolution – Tail rail – Center
• Full Tilt, Black Max, Tuff Tonno – Bow rail – Center
• Trifecta 2.0 – Center Tail Bow – Driver side
• Solid Fold II – Tail panel CAB pocket – Driver side
• Xceed – Second Panel from rear of truck – Driver side
• Encore – Latch cover under CAB panel – Driver side

Truxedo serial numbers can be found in the following location:

• LOT Code / Serial #Serial numbers can be found on the front aluminum bar of the cover on the driver's side

Undercoverinfo serial numbers can be found in the following locations:

• SwingCase: Under the Lid
• One-Piece Covers: At the rear mold line on the driver's side
• Folding Covers: On the 2nd panel from the tailgate, driver side on underside extrusion