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Old 01-07-2011, 06:35 PM   #1
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screw size for metal duct


I know this isn't something that has to be exact but I like to do things the best way possible. I am running 4" metal duct for my dryer vent and am wondering what size(length and diameter) screws should I use to attach pieces of duct together (not at dryer but throughout run). I will be using hex head screws also. thanks


Last edited by ugabulldog; 01-07-2011 at 06:39 PM.
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Old 01-07-2011, 06:56 PM   #2
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screw size for metal duct


I would recommend aluminum metal foil duct tape instead of screws. HDepot should have it. Screws can catch lint. If you must then#8 (1/2") should be OK.
http://www.tapecase.com/c.646.1.1/metal-foil-tape.aspx

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Last edited by yuri; 01-07-2011 at 07:00 PM.
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Old 01-07-2011, 07:07 PM   #3
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screw size for metal duct


Tape for sure, double wrap each joint. Screws are not allowed for drier vents .
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Old 01-07-2011, 08:00 PM   #4
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screw size for metal duct


Yep, don't screw dryer vent. it will cause thr pipe to clog quicker.
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Old 01-08-2011, 07:09 AM   #5
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screw size for metal duct


That's why i was asking, thought screws might catch lint, glad I asked, tape it is!!!! Thanks
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Old 01-08-2011, 07:12 AM   #6
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screw size for metal duct


This is one of the many things that this forum exist for.

Your welcome.

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