A window frame assembly has a built-in foldable screen, having a body, the body having at least a first frame part and a second frame part; the first frame part has at least a first end surface and a second end surface; the second end surface is fixedly connected to the second frame part; the first end surface is provided with a protruded guiding convex part; the guiding convex part is provided with a line receiving groove; and two sides of the line receiving groove are respectively provided with a concave part. The above structure has the benefits of enabling the guiding convex part located on the transverse frame in the foldable screen module to be re-assembled on the structure of the window frame assembly, thus reducing the number of foldable screen module components, and also improving the convenience of assembling the foldable screen module in the window.

A retractable screen structure to cover opening of windows. The structure has a first housing member with a coiled screen mesh therewithin. A second elongated housing member is engaged with an end of the screen mesh extending out of the first housing member. The second housing member has a releasable locking element and is parallel to the first housing member. A cooperative releasable locking element positioned on the window or window frame, is configured to cooperate with the releasable locking element of the second housing member to effect a releasable locking h, The coiled screen mesh substantially covers the opening when uncoiled and is connected to a retracting/extending mechanism contained within the first housing which allows the end of the screen mesh be drawn through an opening in the first housing and uncoiled to substantially cover the opening and to retract the screen mesh when desired.

A fenestration assembly includes a sash, a frame surrounding the sash, and at least one screen assembly mounted in at least one of: the top portion and the bottom portion. The frame includes a top portion, a bottom portion, and two jambs forming first slots extending lengthwise along at least a portion of the jamb. The first slots each include a screen edge retention feature. The screen assembly includes a roller assembly substantially hidden from view, a screen material attached to the roller assembly, and a plurality of raised features. Edges of the screen material extend into the first slots. The raised features are attached to each of the edges of the screen material. The raised features are configured to engage the screen edge retention features and retain each of the edges of the screen material at least partially within the first slot of each of the two jambs.