Question about Thermaltake V21

[ZeusXI]

I see that the thermaltake Core V21

https://www.amazon.com/dp/B00PDDMN6S/ref=psdc_572238_t1_B00U8IS89E?th=1

has windows on all the sides. is there a model like this one, that has maybe just 1 window and the other 2 sides are solid? or are there add-on's that allow me to replace the windows with solid panels?

[aisle9]

Only one side is a window. The other three sides are perforated metal with a magnetic dust filter. Not a true solid panel, but not a window either.