Rectangular & TDC · Size, Pressure & Special Routing
Shallow wide rectangular duct
Rectangular — Pancake duct
ConnectionTDC/TDF
SupportBroad trapeze
How to install it
- 1
Use dense support layout and broad trapezes
- 2
handle with spreader
- 3
align flats carefully
- 4
connect without oil-canning
- 5
install crossbreak/reinforcement as fabricated.
Quality check
- No permanent dish/buckle
- reinforcement complete
- joint square
Stop and verify
Stop if duct face is severely bellied