Pleated window covering for double hung fenestration unit

A fenestration unit comprising:

• a frame having a first portion, a second portion opposite the first portion, a first jamb extending between the first portion and the second portion, and a second jamb opposite the first jamb and extending between the first portion and the second portion, wherein the first jamb and the second jamb each include a first pocket;
• a sash including a first rail, a second rail opposite the first rail, a first stile extending between the first and second rails, and a second stile opposite the first stile and extending between the first and second rails, wherein the first and second stiles include extensions positioned in each first pocket of the first and second jamb such that the extensions are configured to translate within each corresponding first pocket relative to the frame;
• a screen assembly including a screen assembly frame and a screen housing, the screen assembly frame configured to be installed onto the frame, the screen assembly frame including a first side member, a second side member, an upper member extending between the first side member and the second side member at an upper end and the screen housing extending between the first side member and the second side member of the screen assembly, the screen housing having a first housing member and a second housing member, wherein the housing forms a screen retention space between the first and second housing members when the screen assembly is in a closed position;
• a screen positioned between the first and second housing members when the screen assembly is in the closed position, the screen including a first end coupled to the first housing member and a second end coupled to the second housing member;
• and
• a catch element extending from the housing and coupled to the window sash.