What denier is better for a canopy 200 or 400?

A 400 denier fabric is generally better for a canopy compared to a 200 denier fabric. The higher denier indicates a thicker and more durable material, which can offer better resistance to tearing, abrasion, and UV exposure. This makes a 400 denier canopy more suitable for outdoor use and harsher weather conditions, providing increased longevity and protection.