- 1x AC Infinity Flexible Four-Layer Ducting (4" x 8')
- 2x Stainless Steel 4-inch Duct Clamps
AC Infinity Flexible Four-Layer Ducting - (4" x 8')
- 4-inch diameter with 8-foot total reach for compact airflow setups
- Four-layer construction resists punctures and blocks light leaks entirely
- Internal steel-wire helix allows for tight 90-degree bends without collapsing
- 2-year manufacturer warranty against defects in materials and craftsmanship
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Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Who This Is For
- You are replacing old ducting because the thin foil layers keep ripping during routine filter changes.
- You are upgrading your ventilation because pinhole light leaks in your current hose disrupt the dark cycle.
What We Found
- The four-layer build is stiffer than cheap foil, which stops it from whistling under high airflow.
- We suggest this for intake lines since it holds its shape better than standard foil when pulled tight.
What Users Say
- Users who swapped out thin foil say they stopped seeing light pollution issues during critical dark cycles.
- Operators in tight spaces say the internal wire helix let them make sharp turns without losing airflow.
- Growers who move gear between cycles report that these tubes do not puncture when dragged across floors.
AC Infinity Flexible Four-Layer Ducting - (4" x 8')
Struggling with flimsy, leaky ducting that compromises your ventilation system? The AC Infinity Flexible Four-Layer Ducting is engineered to eliminate these common frustrations. Designed for superior durability and performance, this ducting uses a robust four-layer construction that resists tears, punctures, and leaks, ensuring your airflow remains powerful and efficient. Its internal steel-wire helix provides exceptional flexibility for easy installation around tight corners and obstacles, while the dual aluminum foil layers offer excellent fire resistance for added safety. This 8-foot length is perfect for connecting fans, filters, and vents in grow tents, hydroponic setups, or home HVAC applications, ensuring a secure, leak-proof connection to your inline fan or vent port. For an even quieter setup, consider pairing it with an AC Infinity 4" Duct Silencer.
What's Included
Features



Quad-Layer Durability
Prevents leaks, tears, and cuts with its robust four-layer construction.
Flexible Installation
A steel-wire helix allows for easy bending and maneuvering around tight corners.
Easily Customizable
Trim the ducting to the perfect length for your specific ventilation needs.
Fire-Resistant Build
Dual aluminum foil layers offer enhanced safety and flame resistance.
Specifications
| Specification | Value |
|---|---|
| Ducting Size | 4 in. (10.2 cm) |
| Length | 96 in. (8 ft) |
| Outer Layer | PVC Thermoplastic |
| Inner Material | Aluminum Foil |
| Internal Structure | Spiral Steel-Wire |
Warranty
This product is backed by AC Infinity's 2-year manufacturer warranty, ensuring your investment is protected against defects in materials and craftsmanship.
FAQs
To customize the length, first use a pair of wire cutters to snip the internal steel-wire helix. Then, you can easily cut through the aluminum and thermoplastic layers with a standard utility knife for a clean finish.
The primary benefit is durability. The four layers work together to resist common issues like punctures, tears, and pinhole leaks that plague lower-quality ducting. This ensures maximum airflow efficiency, reduces noise, and prevents air from escaping.
Absolutely. As long as your fan, filter, or vent port has a standard 4-inch diameter opening, this ducting will provide a secure fit. It's a core component in many AC Infinity ventilation systems but is universally compatible with any 4" flange.
Yes, if your project requires more length, we also offer a 25-foot version of this 4-inch ducting to accommodate larger spaces and more complex ventilation runs.
For optimal performance, keep your ducting runs as short and straight as possible to minimize airflow resistance. Use the included clamps to ensure airtight seals at all connection points. For a complete overview, check out our in-depth guide to AC Infinity ventilation kits.
Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
Why Trimleaf
Equipping home growers, craft producers, and commercial operations across North America since 2016.