Best Drop On Roller Mat for 4inch Cup?

[ShaggyRS6]

Hi guys! I want to get a roller mat. What’s the best 4 inch drop in for a 4 inch cup hole? I have a Waterbox 100.3

 

[ShaggyRS6]

Anyone got any thoughts on this ?

 

[Jobsafish]

The Klir is the only drop-in model I’ve seen.

 

[DothanReefer]

@ShaggyRS6 Did you end up finding a roller to fit? I am now in market, with of course the same tank as you...would love to hear if you've found anything or what your research turned-up?