TDF Ducting
TDF Ducting stands for Transverse Duct Flange Ducting. It is a self-flanged rectangular duct system used in HVAC applications for air distribution. Instead of using external angle flanges, the TDF system creates its own flange from the duct sheet metal using a TDF roll forming machine.
It’s widely used for medium to large-scale HVAC projects due to its strength, precision, and time-saving installation.

TDF Ducting
It’s widely used for medium to large-scale HVAC projects due to its strength, precision, and time-saving installation.
- Self-flanged edge formed directly from duct sheet
- Requires no separate frame (saves cost & time)
- High dimensional accuracy
- Compatible with cleat or corner systems (TDF Corners)
- Clean look with reduced leakage risk
- Fast and secure joining method