Outdoor sectionals are modular, so the pieces are designed to adapt to many layouts and configurations to fit your space, but you don’t want a set that’s too small or too large. Many sectional sets come in different sizes, too. Choose a spot for your sectional and measure the length and width of the area for an overall starting point. What’s even better is to outline a sectional on the floor with removable painter’s tape or cutouts using old cardboard or newspaper. This helps you visualize the space and how small or large you can go.