What Is The Largest Thule Cargo Box That I Can Install On My 2019 Buick Enclave?  

Question:

Helpful Expert Reply:

The Thule Force XT XXL Rooftop Cargo Box - 22 cu ft - Black AeroSkin # TH6359B should fit the factory crossbars on your 2019 Buick Enclave, but you can verify by measuring the width and height of the bars. If they are no wider than 3-1/2" and no taller than 1-11/16" then it will fit. Regarding opening the rear hatch, this likely won't allow you to do so. As seen in the attached photo, you will want to measure from from the center of the rear crossbar to the line where the roof meets the hatch; if this measurement is at least 25-3/4" then the hatch will open properly.

Since I highly doubt you have the proper hatch clearance, I would check out the Thule Force XT L Rooftop Cargo Box - 16 cu ft - Black AeroSkin # TH6357B. This box requires you to measure from the center of the front crossbar to the line where the roof meets the hatch. If your measurement is at least 47-1/2" then the hatch will open properly. Thule says it will fit fine but I recommend you take these measurements just to verify. I attached a demonstration video for you.

expert reply by: Andrew N

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Rear Hatch Clearance For Thule Cargo Box XT XXL
(click to enlarge)