combination window (fixed arch+casement window)Casement window can open inward or outward.Can tailor according to the style of buildings and customer's doors and windows openings. Can open with a big area. Using friction hinge of stainless steel, easy for cleaning. The special catchment’s system design, keeps breeze from blow to result in rainwater and dusts enter.Feature: Casement window opens front and back. Decorative plastic or aluminium grids in between two panes of glass, more graceful.