Abstract: A window vent assembly has a lower frame assembly and an upper frame assembly. The lower frame assembly has a horizontal plate portion, a first vertical plate portion, and a slanted plate portion. The first vertical plate portion is coupled to a second end of the horizontal plate portion and extends upwardly therefrom. The slanted plate portion extends from a first end of the horizontal plate portion to a top portion of the first vertical plate portion. The upper frame assembly has a horizontal wall portion and first and second vertical wall portions. The first vertical wall portion extends downwardly and forms an air gap between the first vertical wall portion and the slanted plate portion. The second vertical wall portion extends downwardly and forms another air gap between the second vertical wall portion and the slanted plate portion.

Abstract: A ventilator comprises an elongate strip (10) formed as a single component including an integral formation (19,23) extending adjacent an intermediate portion (13), the formation defining an opening (24,33) which is below openings (22) in the intermediate portion (13) thereby ensuring that there is no direct passage to and from the said openings (22) in the intermediate portion (13) in a direction normal thereto.