A net is only as useful as its fit, fixing points and suitability for the opening. Consider the context of the balcony before comparing materials or layouts.
Map the area to cover
Note the balcony shape, open sides, nearby ducts and any access that should remain available for cleaning or maintenance.
Ask about material and installation
Ask what material is proposed, how it will be attached to your surfaces and what visual checks are appropriate. Requirements can differ between properties.
Confirm ongoing access
Discuss how the net can be inspected and whether it affects maintenance access. For high-rise properties, coordinate with building management where required.