- 1x Flexible Four-Layer Ducting (4" x 25')
- 2x Stainless Steel Duct Clamps (4")
AC Infinity Flexible Four-Layer Ducting - (4" x 25')
- Covers 25 feet of distance with a standard 4 inch diameter opening
- Reinforced steel-wire helix prevents collapse during high-pressure suction
- Includes two stainless steel clamps for secure attachment to standard inline fans
- 2-year 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 upgrading your intake line because thin single-layer ducting tends to pinhole and leak odors or light.
- You are rerouting your exhaust through tight corners because standard foil ducting collapses when you bend it too far.
What We Found
- We found the thermoplastic layer dampens fan vibration much better than the paper-thin ducting often sold elsewhere.
- We noticed the internal steel wire holds its shape even when you are pulling it through narrow or crowded port holes.
- Use heavy snips for the wire because the reinforced spiral is much tougher than standard dryer vent components.
What Users Say
- Users who switched from foil say they stopped worrying about tears while shifting lights and equipment mid-cycle.
- Facilities running high-pressure fans report that the airtight seal solved their previous issues with minor odor leaks.
AC Infinity Flexible Four-Layer Ducting - (4" x 25')
Struggling with flimsy, leaky ducting that compromises your ventilation system? The AC Infinity Flexible Four-Layer Ducting is the robust solution designed for reliable, long-lasting airflow in any grow room or HVAC setup. Its innovative four-layer construction ensures leaks, tears, and cuts are a thing of the past, providing an airtight channel for your exhaust or intake needs.
Crafted from fire-resistant aluminum and durable dual-layer thermoplastic, this ducting is built for safety and longevity. The internal steel-wire helix maintains its shape while offering incredible flexibility, allowing you to navigate tight corners and complex spaces with ease. This ducting is a perfect match for a high-quality inline fan system, ensuring your entire ventilation chain is secure and efficient. Whether you're a professional grower or optimizing home airflow, this ducting from AC Infinity delivers professional-grade performance.
What's Included
Features




Durable Four-Layer Construction
A tough four-layer design prevents leaks, tears, and cuts for long-lasting performance.
Flexible Installation
A reinforced steel-wire spiral structure allows for easy bending and maneuvering in tight spaces.
Customizable Length
Easily trim the 25-foot ducting to the exact length needed for your specific ventilation setup.
Fire-Resistant Material
Made with dual aluminum foil layers and thermoplastic for superior resistance to fire and heat.
Specifications
| Specification | Value |
|---|---|
| Ducting Size | 4 in. (10.2 cm) |
| Length | 25 ft (300 in.) |
| Outer Layer | PVC Thermoplastic |
| Inner Material | Aluminum Foil |
| Internal Structure | Spiral Steel-Wire |
Warranty
This product is covered by a 2-year manufacturer's warranty from AC Infinity, ensuring your investment is protected against defects in materials and craftsmanship.
FAQs
It's designed for various ventilation and exhaust applications, including grow tents, HVAC systems, bathrooms, kitchens, and workshops. It's a key component for connecting fans and filters, such as the AC Infinity 4" carbon filter.
No, it's designed to be easily customized. You can trim it to your desired length using a pair of wire cutters (for the steel wire) and a utility knife (for the foil and thermoplastic layers).
The four-layer construction provides superior durability. It combines aluminum foil for fire resistance and thermoplastic layers to prevent punctures and leaks, ensuring a sealed and efficient airflow path that cheaper, single-layer ducts can't match.
While this ducting is designed for efficient airflow, it does not have specific noise-dampening properties. For maximum noise reduction, we recommend pairing it with an AC Infinity Noise Reduction Clamp or a dedicated duct silencer.
Yes, the kit includes two stainless steel duct clamps that provide a secure, airtight connection to your fan, filter, or ventilation ports, preventing slippage and air leaks.
For a comprehensive guide on setting up your system, check out our in-depth article on AC Infinity grow tents and air filter kits, which covers many best practices for ventilation.
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.