| | Duct Galv - Manufactured Non Standard /each | | | |
| | Duct straight TD - Manufactured Non Standard /sqm | | | |
| | TD20 Duct Straight - Manufactured Non Standard /sqm | | | |
| | TD42 Duct Straight - Manufactured Non Standard /sqm | | | |
| | TD30 Duct Straight - Manufactured Non Standard /sqm | | | |
| | Fans - Manufactured Non-Standard | | | |
| | Galv TransitionFittingAdaptors etc - Manu Non-Standard /each | | | |