Noun
window screen (plural window screens)
A mesh, made of metal wire, fibreglass, or other synthetic fibre, set in a frame and covering the opening of a window to keep leaves, debris, insects, birds, etc. from entering a building without blocking fresh airflow.
Proper window screen maintenance is essential to keep them from rusting, which can also lead to tearing further down the line. Source: Internet
Fiberglass window screen was then laid over the bin and the cover snapped back into place to cover the hole. Source: Internet