How-To Cut Flexible Duct - The Duct Shop

In this video we show you the best way to cut flexible ductwork. Once you've measured the length of flex duct you need, cut completely around and through the outer jacket, insulation and inner jacket with a duct knife. Once completed, cut the metal wire with a pair of snips to complete the job.
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[@SteveMarvel]

Beautiful. No time-wasting discussion of extraneous subjects. Only clear, succinct directions for cutting the duct. Thank you!

[@theductshop5414]

Glad it was helpful!

[@loubonaparte5063]

THANK YOU SO MUCH... They cover those instruction with packing tape so I couldn't figure out which end to cut!!!

[@lf1899]

Long scrissors with the correct blades work good

[@Jehayland]

I just saw a picture of a "duct knife" for the first time and had to google search the term to figure out what the heck it was supposed to be used for (it just looked like a dagger/murder weapon to me 🤣 ). Based on how he uses it here, it looks to use a similar principle to a serrated bread knife, except way more durable and with a sharper point and a sharp back edge. (It seems similar to a bread knife, to me, in that you want to be able to tear into the material without simply just smushing it - hence the utility of the serrated edge). For everyone who already knew this, and work in industries where it's a common tool, I'm sure my comment sounds real dumb, lol. I'm just thinking out loud because I learned something new and I'm procrastinating from doing my schoolwork 🙃

[@Wolfofthenightt]

Thanks for the help and tips! I was able to easily turn my spare bedroom into a grow room and do all the duct work myself.

[@luxiness8985]

this is the most informative thing i've ever seen Matt Damon in... thanks

[@FrontyMan]

Everything an informational video should be - expert advice, got right to the point. Thanks.

[@theductshop5414]

Glad it was helpful!

[@audrybella6405]

Thank you for this helpful, instructional video.

[@skipbreakfast]

Just had a box end pop open on me (with it jumping out as you said) and this really helped. Thank you.

[@joncollins5223]

Accomplice Rex you’re welcome.

[@jhuh1758]

good explanation

[@CSGhostAnimation]

thanks m8 It's getting cold in December

[@EmceeTV]

Great video!! Thanks

[@braydon44884]

Thank you!

[@jnunez1203]

Great info men tx

[@michaelcostello6991]

Thanks

[@brandongaston8102]

Video was good explanation up to the part about the snips cutting the wire. Ever try to cut sheet metal with the same snips you cut wire with? Causes problems. I highly advise against that.

[@graeme1744]

In Australia i have the old fibreglass tube i need to cut it down. It seem like its a thin tin tube or something

[@chrisnugent1504]

that black flexi duct I need it but don't sell it in the UK. please help

[@believein1]

Why don’t they sell like 6-7” ducting to connect a flange to a fan, or other similar situations?

[@DanielZajic]

That wire is so hard it damages my snips. Ugh. I was hoping you'd recommend something else.

[@Silver1080P]

Buy a nice pair of wire cutters