Q: As a widower new to the game I need net curtains for my three rooms.

(1) My son's bedroom window I've measured from the existing loose net wire curtain rod to the sill & that is 142cm which I presume is the height & the width of the actual window (rather than the net curtain) is 102 cm. What sized net curtains do I need? I was a bit confused by "Size: A single panel 140cm wide"
(2) My bedroom window is 160cm high & 305cm wide using the same measuring method. There are two separate but identical net curtains currently in place.

(3) The sitting room window is 173cm high from the loose net wire to the window ledge & 417cm wide with three separate but identical net curtains currently in place.

What actual sized curtains do I need for each of the above?