Fit a window-mounted AC unit into horizontally sliding windows. Should work with casement windows, too -- at least that's what I hope!
Sliding Glass Door Wood Trim - Provident Home Design
Browse pictures of the 8 basic types of windows, from bay windows to casements…
Patio door -Galvanized pipe curtain rods without the industrial feel
Master Bath---exit to patio---loving plantation shutters--Palm Beach™ polysatin shutters with Lantana™ and Bypass Track
Shutter for window to create block out + security. Also like the belt rail/ shelf splitting timber and metal cladding
above the bathroom window
Look into Window Remedies for Sliding Doorways - Centsational Woman