Black flexible four-layer ducting with reflective interior and two silver clamps.

Black 4" x 8' flexible ducting with PVC thermoplastic exterior and aluminum foil inner lining.

Two stainless steel duct clamps with a Phillips head screw mechanism on a dark background.

Black flexible duct with silver interior, labeled "PREMIUM DUCTING."

Multi-layer flexible ducting with spiral steel, no-tear PVC, and flame-resistant aluminum foil for max airflow.

A black accordion hose with a silver clamp on a white background.

Black flexible duct with silver interior, labeled

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AC Infinity Flexible Four-Layer Ducting - (4" x 8')

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$12.99 USD

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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

1x AC Infinity Flexible Four-Layer Ducting (4" x 8')
2x Stainless Steel 4-inch Duct Clamps

Features

AC Infinity Flexible Four-Layer Ducting with included steel clamps

AC Infinity Flexible Four-Layer Ducting close up on material layers

AC Infinity Flexible Four-Layer Ducting showing fire resistant layer

🛡️

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

How do I cut the ducting to a shorter length?+

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.

What is the main benefit of the four-layer design?+

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.

Can I use this with fans or vents from other brands?+

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.

Do you offer longer versions of this ducting?+

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.

What are the best practices for installing ventilation?+

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.

Shipping & Returns

Order Processing & Shipping

We currently ship within the United States only. No international shipping is available at this time.

Order Processing:

Most orders are processed within 24-48 hours after being placed.

Some products may have extended processing times of 7-14 business days or more, which will be clearly indicated on the product page. If your order includes such items, you will receive an email from our team or be contacted directly to confirm the estimated shipping timeframe.

Shipping Times:

We partner with reliable national carriers to deliver your orders. While specific delivery times can vary, here's a general timeframe for each carrier:

USPS: Typically delivers between 9:00 AM and 5:00 PM, Monday through Saturday.
FedEx: Typically delivers between 8:00 AM and 8:00 PM, Monday through Friday, with some Saturday deliveries.
UPS: Typically delivers between 9:00 AM and 7:00 PM, Monday through Friday, with some Saturday deliveries.

Note:

These are estimated delivery hours and may vary depending on your location and specific delivery circumstances.
For the most accurate delivery information, please refer to the tracking details provided once your order has shipped.

Free Shipping

Free shipping on qualified items to the lower 48 states. Some that are not eligible are stated on their respective product information page. Learn more

Refunds & Returns

Cancellations are accepted within 24 hours of placing an order.
Returns are subject to each manufacturer's return policy. Please look into the return policy of the brand prior to ordering. Learn more

AC Infinity Flexible Four-Layer Ducting - (4" x 8')