From sewn spiral-wire ducting to heat sealed lay-flat, Celina’s ducting production has expanded to accommodate nearly every market. Base materials include all of the fabric used to create the structures we design, and include everything from Collective Protection chem-bio materials to Infrashield™ treated vinyl and more.

Wire spiral ducting is flexible, created with a variety of pitches, diameters from 2” to 48”, and finishing options that include reinforcement and different end fasteners. The fully automated FX100 allows us to take on bulk production, with fabric, wire, and reinforcement combined at the same time to reduce labor costs. With basic designs for industrial, agricultural, military, and aerospace businesses, we can manufacture ducting for any application.

Spiral Ducting from Celina is crafted to your exact needs; from your choice of base materials to the myriad end connecting options, your order can be specially modified to fit the purpose of your choice.




Celina’s experience in bonding fabrics gives us the advantage of a warehouse full of optional materials for duct fabrication. Our fabrics include:



20696 - Tan

20696 - Green

MILPRF-44103 (Black/Tan)

MILPRF-44103 (Black/Green)

MILPRF-44103 (Infrashield)

V1650 - 16 oz. Block-Out White

MSHA Yellow (2 weights)

Bondcote Bondbarrier

Laminated PVC’s

Coated PVC’s

And more!


Materials used to create ducting are held to the same flame resistance specifications that are required of fabric structures used by or around individuals.

In addition to stock materials, ducting created with insulation is also available. We offer both air-pocket buffering and industry standard batting insulation to provide the ducts with advanced environmental control abilities. Insulated ducting is great for ECU systems, as it resists external environmental interference.

Wear Strips

In order to combat everyday wear and tear associated with the most common failure points, wear strips can be added to the ducting to protect the areas where the internal wire may cause additional duct wall damage. Wear stripping is attached to the outside of the ducts during the manufacturing process and is available in widths of .75”, 1”, and 1.25”. Wear stripping is optional, and can be left off of the final product if desired.


Having chosen the base materials to create the duct, tubing diameter is chosen. To aid in customization of all spiral ducting, we offer tubing from 2” to 48” in diameter, with intermediate diameters available in 2” increments.


Further customization of the ducting can include the pitch of the internal reinforcement wire; the pitch of the wire refers to the distance between corresponding areas on two loops in the wire. We offer standard pitches of 2”, 4”, and 6”. Tighter pitch grants more duct strength, but imposes greater rigidity. Larger pitch allows the tubing to move more freely, with less reinforcement per distance of tubing.


Each end of the manufactured duct can be finished with any of our connectors/finishing methods:

  • Belt Cuff- a strip of fabric is incorporated into the cuff, equipped with an alligator clip fastener
  • Soft Cuff- a fabric extension is added to the end without support wire
  • Velcro Cuff- Loop is sewn around the cuff of one duct end, with a hook flap attached to the connecting end of the next duct; the hook flap wraps around the loop end (hook = air entry end)
  • Screw Clamp Cuff- a built in steel band with a screw clamp for easy tightening
  • Zipper Cuff- corresponding sides of a zipper are sewn to the ends ducting intended to connect
  • Wire Rope Coupling- ends of the ducting have a wire ring incorporated into the fabric, which is inserted into a ducting end with the same finish – coupling assemblies are used to secure the two rings together
  • Rigid Coupling

Due to the manufacturing process, air flow within spiral ducting is required to flow in one specific direction. Keep this in mind when choosing your finish for each end, to ensure that when installed air flows in the proper direction.