Large duct faces need more rigidity than a branch shell.
The heavier sheet and selectable reinforcement address the wider section.
A broad 900 × 450 mm passage is fabricated from thicker aluminum sheet for trunk-scale service. The large faces can be paired with selected reinforcement details, preserving a low-mass metal construction while increasing the section size beyond ordinary branches.
| Internal Section Width | 900 mm |
|---|---|
| Internal Section Height | 450 mm |
| Material Alloy | 3003-H14 aluminum |
| Selected Thickness | Approximately 1.3 mm |
| Seam Type | Pittsburgh lockseam |
| End System | TDC-style connector |
| Exterior | Natural mill-finish aluminum |
| Construction Type | Uninsulated single wall |
| Stiffening Options | External angle members or internal tie rods |
| Customization | Available for the intended trunk dimensions and operating environment. |
The heavier sheet and selectable reinforcement address the wider section.
Aluminum construction provides a lighter material choice for the trunk.
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