Description of the vertical boards blind:
A higher white aluminum rail: Height 25 mm X Width 40 mm

A stem grooved out of aluminum on which the trolleys come to be encased.
The trolleys in Delrin allow the folding up and the orientation of the boards 180°
Fabric boards 100% glass fiber, glossy anti-static treatment, classification with fire M1.
Plates of ballasting in Delrin.
2 chains of distance maintain constant the spacing of the bottom of the boards.
Folding up is carried out using a cord.
The orientation S " carries out using a beaded chain.

Obstruction:
For the blinds in 1 part, the obstruction is given in the table attached.

For the blinds in 2 parts:
- To take the obstructions attached and to add 7 cm.
Blind example 2.100 mm broad, 200 + 70 = 270 mm of obstruction to the total, is 135 cm on each side of bay.
- The number of boards is obligatorily even.
So for a given width one obtains an odd figure, to take the immediately higher even number.
Blind example 1220 mm broad, theoretical number of boards 11, to take 12 boards.