For windows measuring You will need Up to 29in wide 1 Valance 30in - 39in 2 Valances 40in - 48in 2-3 Valances 49in - 72in 3-4 Valances 73in - 96in 4-5 Valances 97in - 120in 5-6 Valances 121in - 144in 6-7 Valances