Our investment platforms give investors exposure to infrastructure and other real assets through public and private funds, and co-investment opportunities. We manage approximately 50 funds around the world, largely regional in focus. They invest in ~130 businesses, 300 properties and ~4.5 million hectares of farmland.
For other uses, see Mullion (disambiguation). A mullion is a vertical element that forms a division between units of a window, door, or screen, or is used decoratively. When dividing adjacent window units, its primary purpose is to provide structural support to an arch or lintel above the window opening.
Exterior Parts of a Double-Hung Window with Circlehead. 1  Mullion. A major structural vertical or horizontal piece that combines two or more windows together. 2  Screen. Woven mesh of metal, plastic, or fiberglass stretched over a window opening to permit air to pass through, but not insects. 3  Weep Hole.