100mm to 120 duct pipe.

[DoogyDawg]

I thought I would start a new thread regarding looking for an extractor fan rather than mix it to a previous one.
All the fans we have been looking at, and the one which have decided on is a 100mm.
But the solid duct is 120mm.
I realise that since the outlet pipe is 120mm, why not just go for a 120mm fan?...as I say it's a long story, far too long to go into here.
Is there an adapter that would allow me to have a 100mm to 120mm outlet, rather than just have the back of the fan free floating in the pipe, or god forbid, touching the inside of the pipe and vibrating like hell.
I can find 120mm to 100mm adapters, I just need it the other way round.
The only other thing I can think of is two wrap the fan with the type of tape you would use on flexible ducting until it slides in snugly.

 

[BS3036]

Know someone with a 3d printer?

 

[endecotp]

I can find 120mm to 100mm adapters, I just need it the other way round.

How do you think they differ?

 

[JohnW2]

How do you think they differ?

As I understand it .... a "120mm to 100mm" adapter (countless available) will usually have a female 120mm end and a male 100mm end (i.e. the fan spigot 'goes into' the 120mm end of the adapter, whilst the 120mm end of the adapter 'goes into' the 100mm outgoing duct/whatever) - whereas a "100mm to 120mm" one (seemingly difficult/impossible to find) would be the opposite of that.

 

[jj4091]

Could you use these 2 together

Reduction with Quick Connector Ø DI 100 mm | to Ø DA 120 mm

Reduction with Quick Connector Ø DI 100 mm | to Ø DA 120 mm in your Felder online shop. Browse through our Quick Couplings assortment. Shop now.

www.felder-group.com

Straight Quick Connector Ø DI 120 mm | to Ø DA 120 mm

Straight Quick Connector Ø DI 120 mm | to Ø DA 120 mm in your Felder online shop. Browse through our Quick Couplings assortment. Shop now.

www.felder-group.com

 

[JohnW2]

Could you use these 2 together ....

I considered that sort of approach (which would be the approach one would use to deal with similar issues in all sorts of plumbing situations), but there are a number of possible issues:

It would presumably only work if the "120m solid duct" were appreciably recessed into the wall/ceiling (or could be 'cut back' so that it was) and/or the fan was mounted on some sort of 'spacer' in front of the wall/ceiling.

One needs to make sure that one understands what these dimensions ("100mm" and "120mm") mean in terms of internal and external diameters of the pipes/ducts, adaptors/connectors and things such as fan spigots - I have quite often been 'caught out' by making incorrect assumptions!

In passing, I wonder if the OP is going to have any problems installing a 100mm fan over a 120mm 'hole'?

 

[Sureitsoff?]

How about this wrapped round the fan spigot

Stormguard Jumbo Rubber Foam Weatherstrip

Seal gaps around doors and windows effectively with this jumbo foam weatherstrip from Stormguard. The strip offers superior shock absorption to help protect your doors, windows, frames and surfaces, along with minimum compression, so it will keep on doing its job for many openings and closings...

www.toolstation.com

 

[jj4091]

I considered that sort of approach (which would be the approach one would use to deal with similar issues in all sorts of plumbing situations), but there are a number of possible issues:

It would presumably only work if the "120m solid duct" were appreciably recessed into the wall/ceiling (or could be 'cut back' so that it was) and/or the fan was mounted on some sort of 'spacer' in front of the wall/ceiling.

That's why I said "could you"

In passing, I wonder if the OP is going to have any problems installing a 100mm fan over a 120mm 'hole'?

That wouldn't be a problem with an Xpelair

 

[ebee]

Know someone with a 3d printer?

That is a good answer to consider if someone has, they can be handy things if you just happen to have one for hobby, home or business use, so a worthwhile question to consider but I think most folk might not, Actually I know some folk who have one or more but never use them too! unfortunately most folk do not.
Used to be the same way "with computers" not that many years ago

 

[EFLImpudence]

 

[DoogyDawg]

That is a good answer to consider if someone has, they can be handy things if you just happen to have one for hobby, home or business use, so a worthwhile question to consider but I think most folk might not, Actually I know some folk who have one or more but never use them too! unfortunately most folk do not.
Used to be the same way "with computers" not that many years ago

Hmmm...I didn't think of that.
My nephew 3D prints.

 

[DoogyDawg]

How about this wrapped round the fan spigot

Stormguard Jumbo Rubber Foam Weatherstrip

Seal gaps around doors and windows effectively with this jumbo foam weatherstrip from Stormguard. The strip offers superior shock absorption to help protect your doors, windows, frames and surfaces, along with minimum compression, so it will keep on doing its job for many openings and closings...

www.toolstation.com

That's an idea.

 

[DoogyDawg]

I considered that sort of approach (which would be the approach one would use to deal with similar issues in all sorts of plumbing situations), but there are a number of possible issues:

It would presumably only work if the "120m solid duct" were appreciably recessed into the wall/ceiling (or could be 'cut back' so that it was) and/or the fan was mounted on some sort of 'spacer' in front of the wall/ceiling.

One needs to make sure that one understands what these dimensions ("100mm" and "120mm") mean in terms of internal and external diameters of the pipes/ducts, adaptors/connectors and things such as fan spigots - I have quite often been 'caught out' by making incorrect assumptions!

In passing, I wonder if the OP is going to have any problems installing a 100mm fan over a 120mm 'hole'?

"it would presumably only work if the "120m solid duct" were appreciably recessed into the wall"
It is.

 

[JohnW2]

"it would presumably only work if the "120m solid duct" were appreciably recessed into the wall"
It is.

In that case, the approach suggested by jj4091 would ought to work, and might be one of the simplest approaches - provided you could satisfy yourself as regards the 'what fits into what' question.