Calculating the curtain width with waves

Our suggest pole lengths are for full multiples of wave.

You can order the length in between. For example, when you order 2400 mm pole for your window, it is between our suggested size 2580 and 2260 mm. We will trim the pole from 2580 mm. So, 2400 mm pole is sold at 2580 mm pole price. 2580 mm and 2260 mm poles are for total 15 x 2 and 13 x 2 80 mm waves respectively. We suggest you to make curtain panels in 2 15 waves for center close situation.When you hang 2 of 15 waves of curtains on 2400 mm pole, the waves of both sides look narrower than 80 mm.

Here are more the details:

Use the measured width for one-way draw, or divide it into two for two-way draw and calculate the number of wave widths in the curtain/s. Each wave curtain needs an odd number of 80mm wave widths to turn into the wall at the ends - 5 in the example here. This applies to both one or two-way draw curtains. To achieve this the curtain width must always fit to the wave pitch steps of 160 mm.

Example 1 : Measured width 400mm
A perfect fit, so use the 400mm curtain as it is.
Example 2 : Measured width 360mm
Use the 400mm curtain.
Example 3 : Measured width 440mm
Round up the curtain width to the next odd wave multiple up - 560 mm

Size steps for each wave curtain

With an 80 mm wave glider, each wave fold uses 160 mm of fabric.
With returns of 160 and 60 mm the total fabric width excluding hems is:
(160 x 5)+(160 + 60) = 1020 mm


If we've rounded up the curtain width to match the waves exactly, it's likely that a pole to match this size will be over the required length when fitted. So, take the original measurement of curtain width from the wall and base the pole on this size - the curtain will stay at the wave multiple width and concertina down. When the curtain runs on a pole reduced in width it will look like this before and after example:

Lastly, please refer to the page of "Calculating the pole length"!