Do I need to drill into my bed rails to install this?

No. This cover is designed to mount directly to factory bed rails without drilling. Use the hardware provided and your existing mounting points.

Can I still access my full bed with this cover folded?

Yes. The tri-fold design collapses completely against the cab, giving you unobstructed access to the entire bed. You don't need to remove it to load cargo.

What should I do before installing this cover?

Clean your bed rails with a dry cloth to remove dirt and debris. Test-fit the cover on your bed before fastening to ensure proper alignment at the rails.