Choosing a large window treatments can sometimes be a challenge.  Whether your window is very wide, very tall or both, this section features some ideas and tips for finding a window blind that's right for your large picture window.  A vertical window treatment, such as a vertical blind or panel track sliding blind, usually works best on windows that are wider than they are tall, and add height and formality to a room.  Horizontal blinds (for large window treatments) on the other hand, such as cellular shades and wood blinds, work best on windows that are taller than they are wide, and enhance a cozy and casual decor.

things to consider:

You'll want to find a large window treatment that can cover the size of your window while still providing the light control, privacy and functionality you're looking for.  For example, cordless cellular shades are a safe choice for children and pets, but are difficult to operate on very tall windows (consider motorized shades instead).  Also, wood blinds are very heavy and are not a good choice for large windows where the blind needs to be raised often.

For split windows, a 2-on-1 or 3-on-1 headrail option divides the blind or shade into 2 or 3 independently operating sections.  Some fabrics are available on different kinds of shades to cover all your windows - try coordinating panel track blinds for your large windows with roman or roller shades on your smaller windows.