Been through this with every Fold since the OG. If youre hitting a construction site, grab the Whitestone Dome Premium Film Screen Protector. It handles the folding stress better than generic films. The Spigen NeoFlex Screen Protector 2-Pack is also decent tho. For that Arizona dust, just make sure you do the install in a steamy bathroom to keep particles down. Dont use glass inside.

Ngl I saw this earlier but just getting to it now. Honestly, my experience with the Z Fold series has made me pretty paranoid because those inner screens are so delicate. I used to trust the factory film but after a grain of sand got under one on a hiking trip, I realized how risky that is. Over the years, I've tried many brands and I always lean towards the most reliable ones even if they cost a bit more. Since you are heading to a dusty site in Arizona, you definitely need a setup that seals the edges perfectly.

• Ringke Dual Easy Film screen protector is a solid choice for the inner display. I've found it doesn't lift at the crease as easily as others because it uses a specific multi-step adhesive process.
• For the outer screen, I'd grab the amFilm OneTouch Tempered Glass for Galaxy Z Fold 7 since it's easy to swap if it gets scratched by the grit.
• To keep the hinge safe from that dust, maybe look at a Spigen Slim Armor Pro Case for Galaxy Z Fold 7 too. One thing I've learned is to never install these in a dry room. I always do it in a steamy bathroom to keep the dust down... it really makes a difference for the longevity of the adhesive. It might seem overkill but these phones are too expensive to play around with. Just take your time with the alignment and you'll be fine.

Solid advice 👍