The HaloShield resusable vent cover helps make room preparation for fogging treatment faster and easier. Constructed from lightweight plastic and closed-cell foam, the HaloShield installs quickly, effectively covering most standard sized ceiling ventilation locations. The ZipPole extendable handle provides secure installation of the cover from the floor, with no ladder required. When you’re ready to re-occupy the room, simply lower the HaloShield, disconnect from the ZipPole and store for your next use. Looking to seal your smoke detectors as well? Smoke Detector Cover Rigid plastic ‘bowl’ with foam edge sized to surround most standard smoke detectors.