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A screen being lifted by a crane — This screen has been stripped down and is about to be lifted onto a lorry to be taken away.

Screens go around the tops of high-rise buildings that are being built. They’re used on construction sites for many reasons, including, but not limited to, protecting the public from dust and debris, protecting workers, protecting joints in concrete, etc.

To be installed, they get lifted from one end, by crane, from a horizontal position to a vertical position, then lifted to the destination and placed in brackets.

A screen being stood up on end by a crane. — Lifting the screen onto its end.

A crane placing a screen into its brackets. — Placing the screen into position in its brackets.

Screens are usually used in high-rise buildings. They get raised by cranes or hydraulically jacked up as the building gets higher.

They have a large surface area, so can easily catch the wind when a crane has them in the air. This might make them spin or blow out of control. Check out this article on Operating cranes in windy conditions.