The standard window catalog in Envisioneer can be updated to include specific manufacturers and custom windows. To add a new window style, right click and select Add Element in the catalog panel. The specific properties we will focus on are how to make a mulled window unit. In the properties of a window you will see # of Horizontal Panels. You can edit this to reflect the number of mulled window panels you will have. The Window Width will be the overall width of the entire window. What do you do if the mulled units don’t match. The middle window is a fixed unit and it has a double hung window on either side. Keep the # of Horizontal Panels to 1 and check off the Display Left Sidelite and Display Right Sidelite options. Next click on the Lites tab and customize the properties of the side units. I hope that makes your Envisioneer work, one step easier!