An emergency basement exit 3, wherein said window includes two hinged sashes {HEAD ~ both} interconnected to said {TAIL ~ at least one tread} and both arranged to open as said at least one tread is pivoted downwardly 
interconnected to
An emergency basement exit 3 , wherein said window includes two hinged sashes { HEAD ~ both } interconnected to said { TAIL ~ at least one tread } and both arranged to open as said at least one tread is pivoted downwardly
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