Blind with round underwires with a diamater of 4mm, placed in the fold at the back of the blind. The distance between underwires is equally divided and ranges from 25cm to 33cm. The distance depends on the height of the blind.

Model 3 is recommended for all kinds of fabric, but it should not be used in the fabric with flowery pattern etc due to the folds which take the piece of the fabric and eventually we can lose the pattern. The set after assembling the blinds takes around 7% of the height of the blind plus 7cm.