airbrick

/ ˈɛəˌbrɪk /

noun

1. a brick with holes in it, put into the wall of a building for ventilation

Example Sentences

Discounted premiums also will come for households that have fitted property flood resilience measures, such as airbrick covers or non-return valves.

Read more on BBC

It is possible to protect houses against flooding with simple measures such as airbrick covers and sandbags.

Read more on The Guardian