Brand Name: ventech
Model Number: RS-VCD
Place of Origin: Guangdong, China (Mainland)
Feattures:
made of high quality G1 sheet with thickness 0.6mm
used on round duct systems to adjust air voulme
standard sizes are adjustable
standard size D1 D2
100 98 104
125 123 129
150 148 154
160 158 164
200 198 204
250 248 254
315 313 319