Cosmos door French Doors, also known as double doors or double windows, are a pair of glass doors usually opening from the back of a house into its garden or onto its balcony. This concept of opening both sashes fully without seeing a centre obstruction has influenced French architecture since the 17th century. The whole grace and dignity of many European buildings was based on this majestic design principle. Modern fenestration adopted the uniqueness of French doors and French windows, mainly upgrading the design for high performance glazing and sophisticated locking devices whilst retaining the original character.

Cosmos door casement sashes are suitable for French doors and French windows

Available in opening-out and open-in mode

Internal glazing options from 4 mm single to 36 mm double.

Choice of numerous multi-point locking devices including full perimeter locking

French doors are available threshold-less or with Aluminum low threshold/p>

Choice of hinge types including concealed (invisible) hinges