- Country of Origin: MX
- Diameter: 4 in ID x 4-1/2 in OD
- Domestic/Import: Import
- Finish: Galvanized
- Length: 18 in
- Manufacturer Name: Duravent Group
- Material: Steel, Steel/Aluminum
- Series: 4E
- Type: Round
- Applicable Standard: NFPA, UL
- Brand: AmeriVent®
- Features and More
Features
- 0.012 in THK aluminum alloy inner wall
- 0.018 in THK galvanized steel outer
Standards/Approvals/Certifications
- UL Listed