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#1 Source in low voltage wire and cable. Call us today to learn more about special offers.
#1 Source in low voltage wire and cable. Call us today to learn more about special offers.

Innerduct Coupler

SKU: CD4-5729-075
Various lead times may apply to this product. Please contact us for more details.


These products are all Made to Order

Which means they are non-cancelable and non-refundable


Anodized Aluminum Innerduct Coupler

Our Aluminum Innerduct Couplers are designed to be used with corrugated Innerduct, providing a tight seal between two separate Innerduct runs. The threads inside this coupler offer a tight seal by rotating in a single direction while pulling each duct toward the center of the coupling.

Product Quality

To ensure our Innerduct Couplers meet the highest of industry standards, each coupler meets Riser UL 1666 Standards, Plenum UL 2024 Standards, is ETL listed, and meets CSA standards.

Durability & Strength

Our Anodized Aluminum Innerduct Couplers provide a secure connection between two Innerduct runs. The tapered screw on design comes in multiple sizes including 3/4" - 2".

Innerduct Products

To complete your Innerduct runs we also provide Anodized Aluminum Terminal Adapters for when you need to connect your Innerduct to a junction box/terminal box. We also carry several other products including Split Loom Tubing, Riser-rated Innerduct, Plenum-Rated Innerduct, and HDPE Innerduct. If you have any questions, feel free to give us a call or email us.



  • Long Lasting Anodized Aluminum
  • Easy Installation and Removal
  • Riser Rated, Plenum Rated, and General Use
  • Reusable

Additional Information

Additional Information

We supply complete Innerduct solutions including different types (or ratings) of Indoor flexible, corrugated, Innerduct including plenum-rated, riser-rated, and HDPE. Innerduct typically has a small-diameter, the need for specific characteristics or a combination of characteristics, such as pulling strength, flexibility, fire rating, and/or the lowest coefficient of friction, dictates the type of Innerduct required.

Plenum Innderduct

Designed for horizontal runs or where vertical runs are inside an air-handling space. A plenum space is a part of a building that can facilitate air circulation for heating and air conditioning systems. Space between a structural ceiling and a dropped ceiling or space under a raised floor are typically considered plenum.

Riser Innderduct

Perfect for runs in non-air handling spaces such as walls directly leading to work-area outlets. Riser-rating is different from Plenum, Riser is a vertical area that passes from one floor to another floor inside a building. For example, an elevator shaft or conduit from one floor to another floor is considered Riser.

HDPE Innerduct

Manufactured from high-density polyethylene (HDPE), intended to be placed inside of Conduit. This Innerduct is lightweight offering maximum flexibility and allowing for installations in small or restricted areas.

What's in the box?

What's in the box?

  • Qty 1 - Innerduct Coupler