Outdoor Air Purifiers

Bengaluru at some point added a bunch of outdoor air purifiers (not monitors, purifiers) to deal with air pollution. These are ~1m x 1m x 1m metal boxes with “pores” that presumably run the air through a filter. The box itself is mounted on a small metal pole, so the overall structure would be 1.25m-1.5m high. How do we map these? I don’t see a tag for “purifiers”. Something under man_made?

Adding a news article for reference: Bengaluru will get 500 outdoor air purifiers to tackle pollution | Bengaluru News - Times of India

man_made=air_purifier seems to be the most obvious choice.