# Triangular & Trapezoid Duette Blind
Source: https://www.fenetresystems.com/en/triangular-trapezoid-window-duette-blind/

# Triangular & Trapezoid Duette Blind

Duette blind on the triangular and trapezoid window: custom-cut double-layer fabric, strongest insulation and form fidelity.

## Triangular & Trapezoid Window Analysis

The triangular and trapezoid glass is an architectural accent; the duette’s double layer fits the sloped edge with a custom cut — the strongest insulation and the softest filtering are given without distorting the form. On the trapezoid glass a moving bottom segment + a fixed sloped top section are planned together; on the triangle a fixed cut is also an economic solution.

### Custom Cut

The double-layer fabric is cut per the window geometry; the sloped edge closes gap-free.

### Double-Pocket Form

Even on the sloped edge two air pockets work; the strongest insulation is preserved on the special glass.

### Segment Order

On the trapezoid the bottom flat section opens, the upper sloped section can stay fixed.

### Architectural Fidelity

The triangular glass’s form is followed with the fabric; the blind does not cover the form, it follows it.

## The Double Layer on the Sloped Edge

This page is for the space decision: is the duette suitable on a triangular or trapezoid glass? The fan-folding mechanism, the triangular rail and the configuration are detailed on the [triangular duette system page](https://www.fenetresystems.com/en/triangular-duette-blind/).

The triangular and trapezoid window excludes the standard rectangular blind; the duette’s cellular fabric fits the sloped edge with a custom cut — the double air pocket gives the thickest insulation even on the special glass.

The movement is separated into segments: on the trapezoid the bottom flat section opens while the upper sloped section can be left fixed. On the triangle a single-piece fixed cut is also preferred.

The decision boundary is the look and the weight: the double layer’s cellular texture can sit thick on the small triangular glass; if a slim solution accentuating the form is wanted the [single-cell honeycomb](https://www.fenetresystems.com/en/triangular-trapezoid-window-honeycomb-blind/), if flat-fabric simplicity is wanted the [pleated](https://www.fenetresystems.com/en/triangular-trapezoid-window-pleated-blind/) is compared.

The measurement is taken specially; the edge lengths and the angles enter the production plan directly.

Application Notes

## Mounting & Selection for Triangular & Trapezoid Window

### Cut

The fabric is cut per the template; the sloped edge follows the form.

### Segment

A moving bottom + a fixed upper section are planned together.

### Measurement

The edges and the angles are production data; the standard measurement is not sufficient.

### Fixed

On the non-opening triangle the fixed panel is the economic solution.

Explore

## Related Pages

Triangular & Trapezoid Window — custom cut, double-pocket form, segment order, architectural fidelity.

[Duette Blinds for Geometric and Sloped Windows](https://www.fenetresystems.com/en/duette-blinds-for-geometric-sloped-windows/) [Duette Blinds](https://www.fenetresystems.com/en/duette-blinds/)

## Window Geometry

With the edge and angle measurements, the custom-cut plan is drawn up.

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