This Lambro 3 in. x 8 ft. Flexible Semi-Rigid Aluminum Duct is recommended over conventional semi-rigid and foil ducts. The Class 0 duct requires no elbows as it can form tight 90° turns requiring less space to work. The design creates airtight seams and prevents unraveling while handling. The semi-rigid duct is reinforced with bead wire helix to always maintain its round shape and is suitable for all general-purpose venting applications including exhaust venting, bathroom fan venting, range hoods, and more, it is installer-friendly and can be uncompressed easily for installation. Unlike conventional semi-rigid ducts that take up large amounts of space, this duct has a compact compression that is 4x smaller than many current ducts on the market. This reduces space needed for transportation, warehouse, and shelf space in store.
- Made from aluminum reinforced with bead wire helix to always maintain its round shape
- Ideal for all general-purpose venting applications and applications where building codes require use of all-aluminum duct
- Can be used for exhaust venting, bathroom fan venting, range hoods, etc.
- Installer-friendly and can be uncompressed easily for installation
- Can form 90° turns; no need for elbows
- Non-combustible with operating temperature range between minus 86°F to 400°F















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