The three most common materials for window frames and mullions are metal, wood and PVC. Some windows have a vertical element to divide the glazing into units, often for decorative purposes and always for additional structural support; this is called a mullion. A muntin or sash bar separates and holds panes of glass in a window; they’re usually wood or metal strips. In the UK, they’re referred to as muntin bars or glazing bars.
Metal
PRO: Popular in warmer climates...
metal window
Europa
Width: 50 cm
Height: 60 cm
... Window for your garden shed: the complete side wall element with a metal-framed clear plastic window brings daylight into the garden shed ( window opening 50 x 60 cm). ...
wooden window
... compliment your dream space. From thermally broken aluminum, timber, glass edge or PVC our doors can be used to create endless combinations and configurations. A matching range of windows and doors are available. ...
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