Air Duct Foil

Air duct foil is aluminum foil supplied as raw material for manufacturers of flexible air ducts and related ventilation components. Worthwill focuses on 8011-O foil in roll and slit-strip form, giving converters a defined starting material for forming, corrugating or further processing. We supply the foil itself, not a ready-to-install flexible duct.

What Is 8011-O Air Duct Foil?

8011-O air duct foil is a soft-temper aluminum material intended for duct-making processes that require the metal to bend or take a formed profile. The O temper indicates an annealed condition. Its suitability for a particular duct design depends on the required wall thickness, forming method, finished diameter and joining process.

Worthwill's current air duct foil specification covers thicknesses from 0.06 to 0.15 mm and widths from 40 to 300 mm, with 76 mm and 152 mm coil inner diameters. These are foil and strip supply dimensions, not the diameter of the finished air duct.

Why 8011-O Foil Works for Flexible Duct Production

Formability for Duct Making

Annealed 8011 foil can be formed into profiles used in appropriate flexible duct manufacturing processes. The right combination of thickness and forming settings helps reduce unwanted cracking or tearing during production. A forming trial is advisable when changing material gauge or duct design.

Thickness and Strip Width Options

A thinner gauge may form more easily, while a thicker gauge generally provides greater resistance to handling damage. Neither choice is automatically better: the finished duct's strength and flexibility depend on the full design. Strip width should match the forming and winding equipment, including the required overlap or seam geometry.

Surface and Coil Consistency

For continuous production, buyers should agree on surface cleanliness, gauge tolerance, slit-edge condition, coil winding and acceptable handling marks before ordering. These details can be as important as the alloy designation because they affect line stability and material loss.

Typical Applications

Flexible aluminum air ducts: Foil strip can be used as a feed material in suitable forming and joining processes for flexible ventilation duct products.

HVAC ventilation components: Duct converters may use aluminum foil where a lightweight, formable metallic layer is required in an air-distribution component.

Further converting: Some manufacturers process foil through slitting, embossing or lamination before assembly. Any adhesive, coating or laminate compatibility should be checked against the actual downstream process.

This product is not the same as finished flexible ducting, self-adhesive aluminum foil tape or foil-scrim-kraft (FSK) insulation facing. Complete duct assemblies and laminated facings have separate requirements for mechanical performance, fire classification, air leakage and operating temperature.

How to Choose Foil for Your Duct Production Line

Confirm Thickness and Temper First

Start with the wall thickness and forming method specified for your finished duct. Worthwill's listed air duct foil range is 0.06–0.15 mm in 8011-O. If you are replacing an existing foil, share the current material specification and forming results rather than choosing a new gauge by price alone.

Match Width, Coil ID and Winding to Your Equipment

Specify the strip width, 76 mm or 152 mm inner diameter, required coil weight and any special winding direction or edge requirements. Width and coil dimensions should be compatible with your unwinding, forming and joining equipment. Custom specifications are subject to production review.

Set the Required Inspection Criteria

If your process has limits for tensile properties, elongation, surface defects or dimensional tolerance, include them in your purchase specification and agree on the test method before production. The mechanical performance of the finished duct cannot be determined from the base foil grade alone.

Supply Information and Ordering

Worthwill supplies air duct aluminum foil in coils or slit rolls for industrial converters. The minimum order quantity is 3 metric tons. Standard dispatch arrangements are within 30 days after receipt of the balance payment. Final lead time and available coil weights should be confirmed for the specific order.

FOB prices are quoted individually according to the aluminum market price at the time of order, the requested specification and the order quantity. For a useful quotation, please send the alloy and temper, thickness, width, coil inner diameter, estimated quantity, intended application and destination port.

Frequently Asked Questions

Is Air Duct Foil a Finished Flexible Air Duct?

No. This page covers aluminum foil rolls and slit strips used as feedstock by duct manufacturers. It does not describe a completed duct with seams, connectors, reinforcement or an insulation layer.

What Is the Difference Between Air Duct Foil and FSK Foil Facing?

Air duct foil on this page is 8011-O aluminum material for duct production. FSK is a laminated insulation facing made with aluminum foil, reinforcing scrim and kraft paper. The two materials serve different manufacturing needs and should be specified separately.

Can I Order a Custom Width?

The published width range is 40–300 mm. Send your required slit width, thickness, coil ID and quantity so Worthwill can check whether your specification can be produced.

Related Aluminum Foil Materials

For broader foil grades and converting requirements, see our Aluminum Foil Jumbo Roll. For projects requiring an applied surface finish, review Color Coated Aluminum Foil. Confirm application suitability and processing requirements before selecting an alternative material.