Wayfair are refusing to post negative review. Reviews cannot be trusted. Purchase with caution. 

I don’t think the manufacturer of these know what “room darkening” actually means. I think a Rizzla paper would block out more light than this fabric. (Yes, a professional seamstress made it into a Roman Blind but the fabric has not been altered). 

For the price, I would never recommend these. Even to a person I disliked.