主权项 |
1. An air quality test unit for attachment to a vent of a heat, ventilation, air conditioning (HVAC) system with air flowing there through comprising:
at least two substrate panels each having respective sides, at least one substrate panel having a corresponding side with a sticky surface that is covered by a removable layer; a hinge coupling the substrate panels about which the substrate panels rotate; and at least one clip secured either to at least one substrate panels or the hinge, the clip adapted to attach to the vent; the substrate panels having a first operative mode in a V-shape configuration and a second operative mode in a closed configuration; wherein after removal of the removable layer, the substrate panels are position in the V-shaped mode with the clip adapted to be attached to said vent such that the sticky surface captures airborne substances in air flow from the vent and in the second closed mode the sticky surface is protectively covered by one or the other substrate panel. |