SLIDING WINDOWS from Pella® of Grand Rapids From elegant curves to modern angles, Pella Windows and Doors Special Shape windows offer virtually endless design possibilities and let you achieve a distinct look at a competitive cost. Special shape windows are available in curves and angles to increase the architectural interest and natural light in your house. Our windows allow you to bring together a variety of shapes, sizes and styles to make a unique focal point. Special shape windows can be made with grille patterns that match other Pella windows so you’ll have a quality, seamlesslook throughout your home. Made in a range of sizes, these factory-assembled window combinations will forma custom look using standard windows. If you don’t see the shape you would like, please refer to our Custom Windows. Pella Windows and Doors can create virtually any window shape or size you need.Schedule an in-home consultation or visit the showroom in Grand Rapids to learn more. Schedule Now!