A window that swings open from the side, usually to the exterior Outswing casement windows are generally the most energy efficient of modern window styles Kolbe & Kolbe offers casements in several mull configurations We offer casement picture windows, casement bow windows, 30o and 45o bay windows, and 90o bay windows Other standard casement styles include casement transoms, casement studio units, French casements, segment head and half-circle top casements, and custom square-out segment-in casements Inswing casements are also available (View single casement window illustration For various types, click on the links within the text )