

Vertical Blind
Details of Blind Stick (turning rod)
A window blind or door blind is a covering for a window or door, usually attached to the interior side of a window. Blinds hide from sight (thus "blinding" a viewer of the window) or to reduce sunlight. Blinds have varying thermal effects: they can block unwanted heat of the summer sun and they can keep in heat in cold weather. But in both of these applications, they also reduce light to varying degrees, depending on the design. Many kinds of blinds attempt varying balances of blinding external viewers and allowing sunlight.
All kinds of blinds can also be motorised and, because of this, automated. Some motorised door blinds are transpassables (one can cross them). Motorized shades can be controlled from a wall switch or keypad, remote control, or a personal computer. This eliminates the hazard of dangling cords
For more information visit: http://en.wikipedia.org/wiki/Window_blind
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