Tilt sash, turn sash, drop flap sash...

If you don't deal with these terms on a daily basis, it can be difficult to understand the descriptions or installation instructions for our drives. We have compiled the most common types of window sashes and provide a brief explanation for each design.

Outward opening bottom hung sash

The hinges are at the bottom, and the window opens outward at the top. In smoke ventilation systems, these windows are very efficient, the smoke rising upwards flows out almost unchecked.

Tilt sash inward opening

The hinges are at the bottom, the window opens inward at the top. Conventional residential windows can be tilted in this way. In this case, the tilt opening is limited to approx. 15cm for normal living room windows (turn/tilt fitting). For this reason, our retrofit sets for living room windows are limited to 15cm in chain extension length.

Other tilt windows are either not limited (i.e. can be tilted all the way down) or have a catch stay installed. The catch scissor also limits the opening width, but usually more than 15cm.

Outward opening top hung windows

The hinges are at the top, the window opens outward at the bottom. Many windows on e.g. winter gardens are also built this way. In this case, the window is not installed vertically, but at an angle in the roof.

Hinged sash inward opening

The hinges are at the top, the window opens inwards at the bottom.

Hinged sash outward opening

The hinges are on the side (right or left), the window opens outward.

Turning sash inward opening

The hinges are lateral (right or left), the window opens inwards. Conventional façade windows with turn/tilt hardware open this way in the turn position.

Top-hung sash inward opening

The hinges are in the middle, or approximately in the middle, the window opens inward at the top and outward at the bottom at the same time. Standard skylights from Velux or Roto, for example, often open this way.

Hinged sash opening outward at the top

The hinges are in the middle, or approximately in the middle, the window opens outward at the top and inward at the bottom at the same time.

Reversible sash

The hinges are horizontally in the middle, the window turns around the vertical axis.

Louvered window

Basically, many small swinging sashes one above the other and connected with a linkage. All the louvers rotate at the same time. The arrangement can also be vertical rotated by 90°.

Lowering top-hung sash

Like an outward-opening top-hung sash (see above), which lowers slightly during the opening process and only then opens.

Parallel opening sash

The entire sash is pushed horizontally outward.