Product description

Semi-rigid aluminum duct is ideal for applications where building codes require use of all aluminum duct. The duct is totally non-combustible with a maximum operating temperature of 400°F.

One end crimped
Continuous airtight lock-seam
Non-combustible
Class 0

Product Contains:

(1) – 4″ x 8′ Flexible Semi-Rigid Aluminum Duct – One End Crimped

Lambro manufactures a variety of flexible laminated, aluminum semi-rigid and vinyl ducts in many different diameters and lengths. Laminated ducts are available in UL Listed and non UL Listed depending on the application and building code requirements. Aluminum semirigid ducts can withstand a higher heat tolerance than laminated. Vinyl should never be used in an application associated with heat.