SLIDING WINDOWS from Pella® of Hanover From graceful curves to modern angles, Pella Windows and Doors Special Shape windows offer nearly endless design opportunities and help you achieve a custom look at a competitive price. Special shape windows are made in curves and angles to increase the architectural interest and natural light in your home. Our windows help you combine different shapes, sizes and styles to form a unique focal point. Special shape windows are available with grille options that match our other windows to create a quality, seamlesslook throughout your home. Available 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 take a look at our Custom Windows. Pella Windows and Doors can make virtually any window shape or size you desire.Schedule an in-home consultation or visit the showroom in Hanover to learn more. Schedule Now!