A-FI41-181446SDL-TBX
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A-FI41 - 18"H x 14"D x 46"W - Aluminum Pickup Fender Inside HD Toolbox, All Smooth Body and Diamond TP Finish Single Drop Open Door with SS T-Handle Lock.
Fits 2021 GMC 1500 AT4 5-1/2' Bed
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Fits 2021 GMC 1500 AT4 5-1/2' Bed
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For Installation Instruction see our Installation Catalog:
Description Sheet: http://www.truckbox.com/images/PDF24/C-Page 69.pdf