As with almost everything in Dhaka, you can have a curtain maker come to your home. Or you can buy ready-made curtains. The curtains in Aarong or Jatra are more expensive than the curtains in New Market. In fact, there is a whole “curtain row” in New Market. It is near the “book street” entrance. This is also the area where you can find art stores and art supplies. Some of curtains range from 500 taka to 1,500 per curtain. These curtains are standard size of about a meter/yard wide so you may need several to cover a window.
Go to New Market on a day when the traffic will not be as epic as it is on a weekday. Some of the shops are closed during Friday midday prayer so I usually plan to arrive around 3 p.m. in the afternoon. Curtains up!