Return air vents are large and ugly, often in conspicuous places, but they're necessary to allow airflow. Here's an idea to hide them without blocking them.

This new entry is part of a deferential glazed vertical structure, with steel-framed windows that lightly abut the terrace’s stone wall. The entry area links ... The stair acts as a natural ...

A construction worker at the Obama Presidential Library was injured Wednesday after they fell down a ventilation duct, sources tell NBC Chicago. According to those sources, the worker fell ...