Window Panel Size Guide

Window Panel Size Guide. Window Measurements up to 29 inches require 1 panel. Window Measurements 30-39 inches require 1 panel. Window Measurements 40-48 inches require 2 or 3 panels. Window Measurements 49-72 inches require 3 or 4 panels. Window Measurements 73-96 inches require 4 or 5 panels. Window Measurements 97-120 inches require 5 or 6 panels. Window Measurements 121-144 inches require 6 or 7 panels. Shop all window curtains.