Underseat Storage Box is a direct fit for the following:

2019-2025 Chevrolet Silverado 1500
2020-2025 Chevrolet Silverado 2500 HD
2020-2025 Chevrolet Silverado 3500 HD
2019 GMC Sierra 1500
2021-2022 GMC Sierra 3500 HD

Genuine GM Part Number: 84310404