This image shows some manual window openers. One type consist of a lightweight shaft that has a fitting at one end, which is designed to fit over and grip window handles so they can be opened. The handle has a ribbed rubber handgrip for comfort and a foldaway lever that allows two-handed operation. Another type consist of a wind up handle that opens and closes the window. The window openers are designed to help those with reaching difficulties or limited hand dexterity to ventilate a room.