Box-type window

A Box-type window consists of two windows one behind the other: an inner and an outer sash in a common, box-shaped frame. The air space between them insulates against heat and noise. Box-type windows are typical of old buildings.

What needs to be considered when motorising?

• Usually only the inner sash is motorised.
• The actuator needs space between the inner and outer sash or on the inner frame – measure beforehand.
• The outer sash stays closed during ventilation or is opened by hand.
• The wood must be firm and dry, and the fittings must run smoothly.

Which actuator fits?

Where depth is limited, a flat VS-KA chain actuator from €65 net. Send us photos and dimensions, we will check the space. More on this under Opening windows in old buildings electrically.

See also: Listed buildings, Outer frame and sash, Chain actuator.

Related terms: Outer frame and sash · Listed buildings · Chain actuator

Datasheets and manuals · All terms in the glossary