20 Gallon Long Chiller Help

[sawickib]

Alright so i just a two fan chiller for my 20 gallon today, and it doesnt fit onto the tank... Here it is.
http/www.amazon.com/gp/product/B00L54ZYAQ/ref=oh_aui_detailpage_o00_s01?ie=UTF8&psc=1
 
Theres actually black screws, but the problem is the lip of the side of the tank, so the fan cant go all the way down to then be screwed on, any ideas here?

 

[bluesword23516]

Is the lip too wide? 

 

[sawickib]

Yes, its the plastic ones on the side, so theres the plastic rim, and another plastic part that goes outward, all my tanks have the same type of lips and i dont want to destroy the plastic that much just to accommodate this chiller, but i do need it.

 

[Ch4rlie]

Hmm, sounds like a DIY set up might be needed. 
 
Have you anything that actually fits over the rim of the tank itself? Like clamps or bigger screw fittings etc?
 
If so, then you could attach the fan to the bigger clamp or fitting then fit to your tank, won't be pretty but will do the job.