AC Infinity Flexible 6-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust

As a sheet metal journeyman that does not typically like flex, this product is good. It does not fall apart, it is not too thin. I have used a lot of flex and this was by far the best.

Excellent quality product, well packaged.

スポットクーラー用の延長ダクトとして使ってます。 末端は写真のように綺麗にカットされていませんが、コストパフォーマンスが良いです

This is going to work beautifully. Haven't installed yet but is a quality constructed product.

I've used a lot of different ducting over the years for various projects, this is one of the higher quality, if not highest quality ducts I've used. Its expensive but worth it. It doesnt feel like its piece of tissue paper, and can handle a decent amount of abuse, at least as far as flexible ducting it concerned.