| 摘要 |
A filter member for use with a fan or room ventilator of the type including at least one rotatable fan member, the filter member comprising at least one first filter layer arranged to filter airborne particulate matter whilst permitting air to pass through the at least one first filter layer, and at least one second filter layer arranged to capture volatile organic compounds and thereby substantially remove volatile organic compounds from air that passes through the filter member, the at least one second filter layer having substantially no effect on the rate of air flow through the filter member. |
