| 摘要 |
An apparatus arranged for mounting interiorly of a window between a lowermost window sash and a window sill provided with spaced triangular side walls an a telescoping forward housing receiving a shield plate therewithin. Both the shield plate and housing include a ceiling flange arranged at an obtuse included angle relative to the plate and housing surface respectively. Further, a filtration screen and a motorized fan assembly is positionable overlying an upper peripheral edge of the organization to enhance ventilation into an associated interior room.
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