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Lambro 6-in x 20.0-ft Foil Flexible Duct

Name: Lambro 6-in x 20.0-ft Foil Flexible Duct
Brand: Lambro
SKU: 3319766
Price: 32.98 USD
Availability: InStock
Rating: 4.5 (64 reviews)

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4.5

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Sat, Oct 3

34 available

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Sat, Oct 3

35 available

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Flexible foil air connector can be used for bathroom fan exhaust venting or other general applications. The air connector is UL certified under 181 class 1. The flexible foil is easy to work with and allows for quicker installations.

UL certified 181 class 1 marked air connector
For use with bathroom fan exhaust venting or other general applications
Duct has a 6-in diameter and extends to 25-ft in length
Duct is flexible for easy installation
Installation clamps sold separately
Maximum operating temperature of 250°F

General
Color/Finish Family	Silver	Type	Flexible
Duct Material	Foil	Insulation Material	N/A (not insulated)

Dimensions
Maximum Length (Feet)	20	Diameter (Inches)	6

Features
Insulated	No

Certifications
CA Residents: Prop 65 Warning(s)	No	Safety Listing	UL safety listing
R Value	0

Warranty
Warranty	1-year limited

Miscellaneous
UNSPSC	72151200

Check out the Best Selling Flexible Duct on Lowes.com

Review

4.5 out of 5

64 Reviews

98% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this flexible duct for its effectiveness, affordability, and reliability in venting exhaust for portable air conditioners, dryers, and bathroom fans. Most highlight seamless airflow without leaks, noting it outperforms original equipment at significantly lower cost—often less than half the price of alternatives. Many appreciate the flexibility, snug fit, and included clamps. While some initially worry the thin foil construction appears flimsy, users consistently report it proves durable and tougher than expected. A few mention limited shorter length options and one isolated adhesive failure under high heat. Overall, reviewers strongly recommend this product for reliable performance and exceptional value.

Customer review summary generated by AI, including incentivized reviews.

64 Customer Reviews

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Works well

Would Recommend

This flexible duct was exactly what I needed to route my hvac.

LcampJune 22, 2026
Verified Purchaser

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Worked as advertised

Would Recommend

Worked well for venting the 150cfm bath fan. Using the larger duct seemed to do well for airflow

YvetJune 22, 2026
Verified Purchaser

Was this Review Helpful ?

Durable flex tube

Would Recommend

I like how flexible and how fitting it on my AC unit worked so well.

Nox28June 20, 2026
Verified Purchaser

Was this Review Helpful ?

Did the job.

Would Recommend

No issues with this product.

MeliApril 8, 2026
Verified Purchaser

Was this Review Helpful ?

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5 Questions

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What internal vacuum (SP) will it withstand? I plan to install on the suction side of a bathroom exhaust fan, which is capable of about neg. 1.6" SP.

Can this be used for cooktop exhaust venting?

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