Best way to adapt ducting to odd sizes

[imagreenwitya]

Hi all,
Have an interesting situation, I have a cool tube that is 4 1/2 in in diameter. I have some 5 to 4 reducers that I might use with thick weather stripping wraped around the tube but was wondering what other innovative solutions might be out there.

Thanks for your input

 

[scroglodyte]

craft a 4 1/2 to 5 adapter, from thin sheet metal, and then use your reducer. weatherstripping may burn/melt and cause a fire or a mess. use caution, imo.

 

[imagreenwitya]

craft a 4 1/2 to 5 adapter, from thin sheet metal, and then use your reducer. weatherstripping may burn/melt and cause a fire or a mess. use caution, imo.

Good point, thanks!

 

[Wordz]

​a hose clamp

 

[imagreenwitya]

​a hose clamp

When using an ridged adapter I don't think that would work out too well and 4in ducting will not fit on the 4 1/2 couple. I thought about cutting the ducting and using tape to fill but that seems like a rather poor solution under use , I could be wrong and often am

 

[woodsmaneh!]

Put a 4" round fish collar in the other pipe spread the metal tabs to center it and use spray foam to fill the gap, use window and door foam as it does not expand as much, ready to go in 3 minutes.

Cut a wood collar insert and screw, insert 4" pipe.

Any tin shop will make you one for 20$

 

[drolove]

duct tape, thats what its for lol. < < < if you want to go the cheap route

 

[Warlock1369]

I 5 inch and crimp it with ducting crimpers. Should bring it to 4 3/4. Tape it. Or get a 4 inch and place a rubber seal on the outside and force it inside the tube then tape. And where the he'll did you get a 4.5?

 

[budolskie]

Hi all,
Have an interesting situation, I have a cool tube that is 4 1/2 in in diameter. I have some 5 to 4 reducers that I might use with thick weather stripping wraped around the tube but was wondering what other innovative solutions might be out there.

Thanks for your input

cut the bottom of a plant pot down as i needed 6 down to 5 ant the top of pot was 6 then sawed off where i needed to

 

[imagreenwitya]

duct tape, thats what its for lol. < < < if you want to go the cheap route

Yeah, I know It was very tempting. I just wanted something to that I could remove without hassle to change bulbs easily, ended up getting some high temp gasketing and sliding the adapters on.

Air-tight and works like a charm

 

[imagreenwitya]

I 5 inch and crimp it with ducting crimpers. Should bring it to 4 3/4. Tape it. Or get a 4 inch and place a rubber seal on the outside and force it inside the tube then tape. And where the he'll did you get a 4.5?

http://www.ebay.com/itm/260760540334?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_2650wt_1396

In the specs they state 5in, and the glass is indeed 5in but the ends are 4 1/2 a minor pain for finding a cheap and purpose built 250w cool tube.

 

[Warlock1369]

Ok. I would be very careful of the glass. Might not be tempered. If you can keep your fan going at least 20 after lights go out. Also might seem airtight but I can tell you it isn't. You will put the smell out if you don't put HVAC tape (thick aluminum) around where the glass meets the metal. Go about 1/2 inch on to the glass. Setup looks clean.