Window doubled panel reflection , and material

[Etrur Mehaj]

What is best solution for Glass material like in photo attach Doubled reflection
u think need,  doubled box modeling with distance ,  doubled faces with distance  , or one box like 12mm , etc .
Which is the best settings .
Or all need to be in material please explain in some detail ....

looking forward to your response ....

Thanks ......

[romullus]

It would be 2 boxes or 2 planes depending if you need refraction or not.

[Etrur Mehaj]

Yes yes windows exterior glass with all reflection and refraction , but with distance box  relfection is look like one  , not doubled with bit distance  , but long distance of boxes look good but not real ..

[romullus]

Yes, and that is physically correct. Picture in your example was taken from up close, from a distance it'd look like single reflection.