| Glass Insulation | Least Chanes of moisture thus "No Maintenance" |
| Greater Inner Diameter | Drastic amount of power saving |
| Non Corrosive | Provides clean air |
| Sandwich glass reinforce | Higher strength , least chances of Sagging |
| Smoother Inner Surface(0.1 RA value) | Fine flow of air with least friction |
| UV resistance | can last longer even in sunlight |

Price: