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A window blind is a specific type of window covering which is
made with slats of fabric, wood, plastic or metal that adjust by
rotating from an open position to a closed position by allowing
slats to overlap. Metal window blinds are often used outside of
the house or business to protect against theft, temperature,
vision, bad weather and fire (in fire-prone areas). Often these
blinds are machine-operated, rather than hand operated.
The horizontal version uses a thin woven "ladder" system to
suspend the slats and enable slats to be closed via a rotating
drum to which each upper end of the woven ladder is wrapped and
attached. A lift cord allows blind to be pulled up and stack
tightly to top of window when desired.
Unlike horizontal
blinds, vertical blinds are less likely to be damaged in strong
winds and to hold dirt, but are more likely to break down.
Generally they require less muscle strength, and are faster to
operate.
Stationary vertical blinds are hung in the doorways of some
homes and businesses which generally leave the door open.
Movement of the blind may signal a change in air flow, or
someone entering the doorway. More commonly however, these
vertical blinds are made of thick plastic. In the cold rooms of
food businesses, this slows the leak leakage into the cold room.
In warmer climates, vertical blinds discourage flies and some
other insects from entering the building. |
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