Listings show a range from full blackout to room-darkening to light-filtering, so you can choose options for strong darkening or for gentle light diffusion.

Some listings advertise thermal or energy-saving properties, describing insulating features that help maintain room temperature and labeling panels as energy efficient.

Compatibility varies by listing; shown pole sizes range from about 1.18 inches up to 3 inches.

Many red curtains are sold as a pair (Number of Pieces: 2), while some listings sell individual panels (Number of Pieces: 1).

Many listings list 100% polyester; other materials that appear include velvet and microfiber, and at least one listing lists 100% cotton.

Panel lengths in the listings range from about 36 inches up to 96 inches; widths range from about 20 inches up to 70 inches.