Where it all began—our J Flange, four-bolt connector, is still essential and unmatched in quality!✨

Key Features:

✅ Designed for the largest and heaviest ductwork
✅ Roll-formed from 20-gauge material
✅ Available in galvanized, aluminum, aluminized, stainless steel, galvanneal, and PVC-coated options
✅ Offered in 20-foot and 10-foot lengths
✅ Integrated sealant pocket for an airtight seal
✅ Extra reinforced ribbing for added strength
✅ Corners are stamped from 11-gauge material (includes nuts and bolts)
✅ Complies with SMACNA J rating

These features ensure our connectors provide durability and reliability for any project!