Wall air vent cap is usually used in restroom, kitchen and buildings sidewall as fresh and return air outlet. It can also be used as exhaust outlet for smoke exhaust ventilator. And the wall air vent cap is equipped with stainless steel insect proof net and has the rainproof function. There are three barbs on the neck of the wall air vent, so there is no need of screws to fix it, which makes it easier for installation.
