Three settings adds flexibility for different climates. The exhaust on the new system comes as an oval rather than round.

Easy to install and pretty self explanatory. Not super quiet, but not noisy. Totally easy to install for the use of venting my glowforge laser cutter.

Good power. Speedy shopping as well. Happy with my purchase.

Worst engineered, yet simplest thing i have ever seen. Not flush and requires tape. Quality is very feeble. It’s so flimsy.