- 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 an 8-foot reach for high-flow ventilation
- Four-layer construction with dual aluminum foil provides enhanced fire resistance and safety
- Connects to any standard 4-inch ventilation port with the included stainless steel clamps
- 2-year manufacturer warranty against defects in materials and craftsmanship
- View More Details
Earn 12 points for shopping and get $0.12 off your next order. Join Harvest Club for free.
More in this Series
Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Who This Is For
- Operators struggling to route ventilation through tight corners without the ducting collapsing or kinking.
- Growers tired of replacing thin ducting that punctures easily when moving equipment or adjusting the harvest area.
What We Found
- The four-layer wall is noticeably thicker than standard foil, keeping the system quiet even at high fan speeds.
- We suggest using the included clamps even on ribbed ports to ensure the seal stays airtight under high pressure.
What Users Say
- Users who switched from plastic ducting say the fire-resistant foil layers give them peace of mind regarding safety.
- Buyers who replaced leaky ducting report that their room stays cooler because of improved airflow efficiency.
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.