This windo is 39” wide (1 )valance stretches to 42” fully stretched out. So to achieve the look in the advertisement you’ll need 3 for a standard window but if you have a larger window as I do you need twice that. I bought 3 and you see how it turned out! So just take measurements to know what you’re desire look is going to be. I love the colors but I’ll work at it to get my desired effect! I’m not quite there yet!