Long lasting plastic construction delivers durable support for the filter setup and helps maintain indoor air quality over time. Efficient filtration system: easily attach filter cotton to the bracket to significantly improve the air conditioner filtration and promote fresher indoor air. Broad compatibility: designed to work with multiple filter sizes and adaptable to different models of air conditioning units in home or office environments. Tool installation: no tools required; install the bracket and filter quickly for easy maintenance. Use scenarios Home use: attach the bracket and cotton filter to your room AC to reduce dust and allergens and improve indoor air quality. Office environment: compatible with various AC models in small to medium workspaces, enabling simple and quick filter upgrades across units. Rental or shared spaces: convenient tool setup allows tenants or occupants to filters rapidly with minimal disruption.