Anyone connect a carbon filter to Bathroom type exhaust vent?

[MrPuffAlot]

Anyone retro fit a carbon filter/scrubber to a Bathroom like
Exhaust vent??

I have a bathroom type 70cfm exhaust vent.
I want to control odor, but unsure about connecting
a carbonfilter to it. All carbon filters have circle 4-8inch connections.
but my bathroom exhaust vent where the fan sits in is Square.

How would I connect them together??

if any of you have.. Picture of your set up would be greatly appreciated.

 

[Firepower]

i purchased one that i was going to use that for, but plans changed, only issue i had was adapting the intak to the filter and i solved it by building a wooden box between both and attaching them to it..
Shiny metallic tape for AC came in very handy!!

 

[JeSus]

quite an old post but im just about to buy a bathroom fan too, im sure you can also get sqaure to circle connectors, only cheap plastic bits!

Anyhow, hows the fan? do you have it hooked up?

 

[Bubby]

Cut up some cardboard, duct tape the edges.

 

[MrPuffAlot]

I bit the bullet and ended up buying a Can inline fan with matching
carbon filter. Really glad I did.. IMO: bathroom fan doesn't move
enough air to be efficient.

BUT:

I ended up using the bathroom fan for my DIY dry chamber.
That sucker works like a charm.