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Lambro Industries - 414UL-R The Lambro 4 inch x 25 foot UL 181 air connector is ideal for bath fan exhaust and other general venting applications that require moist air and humidity from exiting the home. This duct is made from multiple layers of aluminum / polyester material bonded with a fire retardant adhesive with a maximum operating temperature of 257°F. The duct is supported by a galvanized wire helix spiral frame to prevent collapsing. This duct cannot be installed in lengths greater than 14 feet as per the UL 181 class 1 guidelines and can be cut to length as needed. Check local building codes prior to installation.
Features- Retail insert
- UL 181 class 1 certified marked and listed duct
- Not to be installed in lengths greater than 14 feet
- Maximum operating temperature of 257°F
- Ideal for bath fan exhaust ventilation applications
- Constructed with multiple layers of aluminum / polyester material
- Galvanized helix wire construction for additional support
- Flexible design for easier installation
- Do not use for clothes dryer installations (UL 2158A duct must be used)
- Installation clamps (not included)
(1) – 4 inch x 25 foot UL 181 class 1 air connector
Additional Information
Item Number414UL-R
Package Size201/4 x 13 1/2 x 15
Package TypeRetail
Package Weight23.40 lbs.
UPC0 3989988414 9
TypeFoil Flex
Diameter4"
UL ListedYes
CategoryBathroom Venting
ManufacturerLambro Industries
Mpn414UL-R
SubcategoryBathroom Ducts
Weight23.4