Gripple loop hanger for spiral duct

Before you start

• Use the exact manufacturer system, approved submittal, load table, anchor type, cable size, bracket, locking device, installation tool, and attachment method for the project. Do not mix components or guess a working load.
• Confirm the spiral duct diameter, actual suspended weight, cable size, loop-hanger product, attachment point, and allowed support spacing.
• Inspect the cable, locking device, loop, and duct surface for damage, kinks, corrosion, or sharp edges.
• Check that the loop will support the duct without crushing the spiral seam or flattening the pipe.

Lay it out

1. Mark the duct centerline and each approved support point.
2. Keep supports clear of slip joints, fittings, dampers, and access openings.
3. Plan loop positions so the spiral seam is not pinched and the run cannot roll.

Set and support it

1. Install the approved overhead attachment before lifting the duct.
2. Feed and lock the cable exactly as the manufacturer shows.
3. Form a broad, even loop around the duct and keep both sides balanced.

Make the connection

1. 1

   Verify the overhead attachment and cable orientation.

2. 2

   Set the loop around the duct at the marked support point.

3. 3

   Take up slack gradually while keeping the duct round.

4. 4

   Adjust both sides until the duct reaches elevation and remains level.

5. 5

   Engage and inspect the locking device.

6. 6

   Trim or secure cable tails only as the manufacturer permits.

7. 7

   Release the lift slowly and watch for slipping, crushing, or rotation.