Typical opening: Many openings are compact apartment balconies where front span and side gaps both matter; total area is usually small, so total cost stays modest
Building mix: Newer flats, rental-heavy apartment blocks, family towers, and compact high-rise layouts
Outdoor conditions: Sun, rain bursts, and regular outdoor dust make wire grade important — SS 316 for open balconies, SS 304 for sheltered windows; SS 201 is the 'too low-cost' wire to avoid
Common layout cue: Balconies combine drying, child movement, pet use, and storage in a small footprint, with French windows the next most common ask