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@Mithun: the layers are: Curtain,Glass window,Empty space and Lattice brick wall !!
thanks a lot Mithun ;)

@Saeed: Thank you...
مرسي سعيد جان... شما خيلي لطف داري به ما :)

@Alun Lambert: thanks a lot Alun :)

@sajed: Salam! Merci az lotfe shoma! :)

@Baz: Cheeers!!! Thanks a lot Baz... Its your kindness! :)

@MaryB: Thank you very very much dear Mary! I appreciate your kindness :)

@Lorraine: Thank you very much! best regards from Ahwaz to Gatineau ;)

@paulski: Its your kindness dear Paulski! so many thanks :)

@Silvia: Thank you so much Silvia :)

@Michael Rawluk: Cheers Michael! thank you very much for your kindness :)

@Marion: So many thanks dear Marion :)

@Earnest: Thank you my dear friend :)

@mosleh: Thanks a lot my friend :)

@Arash: So many thanks dear Arash :)

@Zamyad: Thanks a lot for visiting and comment ! :)