Combination If you don’t want to choose between casement and sliding windows, then we have a solution that gives you the best of both worlds – Combination Windows. Built by combining one or two fixed/single sash side hung casement door/window/double sash side hung casement door/window, top hung/two/three track multi-sash sliding windows, it makes your home complete. Here’s a look at our collection of Combination Doors and Windows: Key Features: Looks aesthetically grand and imposing. Integrates a strong and attractive unit of doors and windows. Works best for wide, tall and external spaces in your walls. Multiple kinds of windows grouped together to form one comprehensive unit. Gives you the freedom to choose various permutation and combination of windows. Costs more because of the extra reinforcing required to make it more stable at the coupled joints.