What is a hopper window?

A hopper window is a single style window similar to a casement window in that they both are hinged for opening, rather than slide open. A hopper window is hinged on the bottom and opens inward from the top. Though a hopper window can come in a variety of sizes, the hopper window is a common style window in small areas and openings, such as basements and bathrooms. What makes the hopper window versatile for small spaces is the fact that they open completely. A smaller window occupies a limited amount of space already and those that slide open only allows half the area of the window to be used for ventilation. A hopper window, because the entire window opens from the top, allows ventilation through the entire surface area of the window. The hopper window is thus commonly found in basements and in bathrooms where there is a window in the shower or tub area. Though less common, hopper windows are sometimes used above other, larger style windows. The hopper window features a hinged bottom ...  more

A window where the sash opens inward pivoting at the bottom rail.