An outdoor storage box is useful only when it holds the right category without consuming the circulation you were trying to protect. Measure the box both closed and open before comparing brands.
Start with the objects, not the advertised capacity
List what must live outside and record the largest item dimensions. Cushions, watering gear, toys and hand tools need different shapes even when two boxes advertise a similar overall volume.
Measure the footprint and lid swing
Record width, depth and height in the intended location, then check how much space the lid or doors need to open. Keep the walking route, exterior doors and steps usable.
Match construction to exposure
A covered balcony, open patio and exposed yard create different demands. Compare the manufacturer’s intended outdoor use, drainage details, ventilation and care instructions for the exact model.
Access matters more than maximum capacity
If frequently used items sit under seasonal equipment, the box becomes a friction point. Choose a size you can organize into a few visible categories instead of one deep mixed pile.