Filter for passive air vent

Replacement Filters for Passive Air Inlet Vents
These replacement filters are designed for passive fresh air inlet vents, such as wall or window-mounted trickle vents. They help ensure that incoming air is clean by capturing dust, pollen, and fine particles, improving indoor air quality especially for allergy sufferers.

The filters are easy to install and replace, and they support the function of natural ventilation systems without restricting airflow. Ideal for maintaining a healthy living environment without mechanical systems.

✅ Filters for trickle vents and passive air inlets
✅ Improves indoor air quality
✅ Blocks pollen, dust, and other allergens
✅ Easy to replace