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Apex / Gable
How to measure

Record your measurements in centimetres. Measure the intended curtain coverage, then the finished drop. We calculate the fabric fullness for you.

1. 1. Base width · 2. Overall peak height

   Measure the complete base and the vertical height from that baseline to the peak. Peak height is not the length of a slope.

2. 3–4. Left and right verticals

   From the same baseline, measure each vertical side to where its slope starts. Record both sides separately; do not assume they are equal.

3. 5–6. Left and right slopes

   Measure the actual lengths of both sloping sides. Describe the intended fixing position in the configurator.

Your window typeApex WindowGable End WindowTriangular Window

Common measuring mistakes

Mixing millimetres and centimetres; measuring the glass instead of curtain coverage; adding fullness yourself; assuming the floor or two sides are level; measuring before deciding where the curtain top will sit.