Spiral Air Duct 4 Inch/Galvanized Steel Ventilation Pipe for HVAC Systems/Round Ducting Tube – Rust-Resistant Metal Air Flow Channel – for Residential, Commercial, Industrial Use

Well made and durable. Not flimsy at all

Did the job

worked perfectly to run through a 18 inch adobe wall

Used this to replace an old, original dryer vent duct that was soft and ugly. After yanking out the old one, this new piece was strong enough that I could simply push and rotate it back through the original hole without issue. Doubt this will ever need to be replaced again.

Enabled easy attachment of flexible duct to wall cap due to enhanced access. Fit is right on.

Excellent

This does exactly what it's supposed to do. Matches the description perfectly. Good thick material.

Cut a hole though stucco and drywall. Twisted it in place. Made easy with it's threaded design. Working great. The air flow is smooth.