Duct areas — the narrow vertical gaps often found between adjacent buildings or wings of an apartment complex — are easy to overlook because they're not a space anyone spends time in. But that's exactly what makes them risky: items can fall in from any floor, birds nest there undisturbed, and debris tends to accumulate unnoticed.
A safety net across the duct opening on each floor (or at key levels) prevents falling objects from becoming a hazard for anyone below, and stops birds from turning the space into a permanent nesting site, which often comes with droppings, noise, and odour.
Because duct areas are narrow and irregular in shape, these nets usually need to be custom-measured and fitted floor by floor, which is why it's worth having a professional assess the space rather than trying to estimate it from the ground.
