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Browse ProductsDucting
Explore duct work products at National Air Warehouse. Ensure efficient air distribution and ventilation in your HVAC system. Upgrade your duct work today!
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Need help choosing the right system or part? Curious about how shipping works? Call or live chat to speak with one of our knowledgeable professionals, Mon – Fri 8AM to 5PM ET.
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In Stock In Stock In Stock In Stock In Stock In Stock In Stock In Stock In Stock In Stock In Stock In Stock In Stock In Stock In Stock Flexible duct and fittings
Insulated flexible duct from Quietflex with a metalized jacket, in diameters up to 20", plus galvanized steel fittings such as duct reducers.
What to check
- Diameter: match the collar size at the plenum and register boot. Undersized duct restricts airflow.
- Insulation: insulated flex keeps air at temperature and prevents condensation in hot attics.
- Install: pull flex fully extended, keep runs short and straight, and support it so it does not sag.
Shipping and returns
Free shippingIncluded on orders to the continental US.
Fast dispatchParts ship by UPS or FedEx Ground in 1 to 2 business days.
Tampa pickupWill-call pickup at our Tampa warehouse, Monday to Friday.
30-day returnsUnused items in original packaging, within 30 days of delivery. Special-order items are final sale.
Not sure what fits?Call us with your model number, Monday to Friday, 8am to 5pm ET.