Window comprising first and second parts being releasably fastened together by locking means

摘要

A window 10, comprises a first part 12 and second part 14 which overlie one another to form the completed window and releasable locking means 22, locking said first and second halves together wherein once the window is installed, the locking means becomes inaccessible, and at least part of the window must be removed, in order that the locking means may subsequently be made accessible.