They look simple, but conventional curtain rods that attach to drywall ... "They work with any wooden window frame that's at least 1/2 inch wide and can hold up to 20 lbs, making them both sturdy ...

【Wide Application】This adjustable tension curtain rod is ideal for small windows, doorways, and small spaces (24-36 inches). It is perfect for hanging lightweight curtains or door ...

You've settled on curtains for your window coverings ... less than an inch up to 3 inches wide. In general, common diameters ...