3 pane sliding white window that screws to the existing window.
Overall size 175.5 x 102 cm (69"x 40").
2 Panes 56.5 x 95 cm (22.25" x 37.5").
1 pane 60.5 x 95 cm (23.75" x 37.5').
Frame can be taken part for transport though it normally fits in a car without dismantling.
Or you take just the panes if you have other uses for the glass.