Velco Carmin filter for trickle vent 

The unique efficacy of the filter is based on the electrostatic charge of the 3M Filtrete™ material attached to the surface of the coarse filter. The filter effectively prevents impurities from entering indoor air. The unique efficiency of the filter, made from patented 3M Filtrete™ material, is based on the electrical charge of its fibers. 

Size

Size 15/550 mm. Can be cut to the desired length, and any excess pieces can be joined together.

Applications & Installation

Installed in the trickle vent of the window frame, with the white side facing indoors. To prevent air leaks, ensure the filter is snugly in place. The filter should be replaced as needed, approximately twice a year. The appropriate replacement interval depends on the building's location. For instance, high traffic areas and areas with high pollen-producing trees accelerate filter contamination.

Available for individual purchase as well as in a retail package of two units.