Mining modules - stackable?

Hi everyone. Finally time to play the game a bit and practicing mining with a Prospector. My question is: are the passive mining modules “stackable”. For example if i use a module to increase the green window by 10 %, if i buy/use 3 of the modules do i get 30% increase in the window size - or did i just waste $120K auec buying the extra two modules?

Modules are stackable (i.e. 3 FLTR-L). Expendables are not.

thank you Jolly!

To clarify…you can have 2 or more of the same expendables (I often do), but can only use 1 at a time. Right now I like stacking the FLTRs.