Building a small shed for garden tools and the main water spigot is inside. Want an access door that won't rust in the rain but still looks intentional, not like an afterthought.

Outdoor plastic is the way—metal just flakes. This access panel is UV-stabilized so it won't yellow, and the gasket around the edge keeps bugs out. I mounted it on plywood backing inside the shed wall; caulked the exterior seam with exterior-grade silicone. Now I can shut off the hose bib in winter without digging through shelves.