Diameter of big chain wheel D3(mm):391
Length of door roller B(mm):505
Max diameter of roller shutter D1(mm):560
Whdth of main wallboard L3(mm):420
Center distance between big small chain wheels A(mm):363
1 good design,advance structure
2 easy installation
3 low noise, small power wastage
4 long service life
Place of Origin: | Zhejiang China (Mainland) |