Rectangular Elbow 001

Rectangular ductwork is manufactured in three different styles.

They are as follows:• Wrap Around Duct• L-Shape Duct All sizes shall be listed using outside dimensions.• 4 Piece Duct
• Please refer to the following charts for specific materials, gauges, and end treatments.

TDC Ductwork and Fittings
SMACNA recommended TDC™ duct is a 4-bolt system with a difference. Instead of cutting, assembling and installing a separate flange onto the ductwork, the TDC flange is roll formed directly onto the duct. This provides a solid metal connection that reduces leakage which is why the TDC system is the best for minimum leakage application. A TDC assembly instruction manual is available upon request.