1. Adopting the spring booster system can boost up the lifting pull and simplify the operation. 

2. The angle of the bead chain is versatile

3. The roller style can be available for right and left side.

4. Specially applicative for thicker fabric (Havelock, weighty textile)

5. Assembled with 38mm aluminum tube;

6. Maximum size: W3500mm*H3800mm

Criterion collocate：

1. Left bracket: 1 piece

2. Right bracket: 1 piece

3. Assembling bracket: 2 pieces

4. Assembling screw: 2pieces

5. Spring system in 1.3*500mm: 1piece

6. Roller shade clutch: 1piece

7. Continuous loop beads chain in 1800mm: 1 piece

8. End piece of bottom rail: 2pieces