These are the ''REAL'' thing!  Not a copy,tried those...'Authentic 'Winex'' filters are hard to find,and expensive!  Trust me they workvery well! Bought these fprmy adult son. I gave him a Winix air cleaner for Christmas and was devestated when I couldn't find the real filters. I should have checked Wayfair first!  Bought 2 sets...I am happy and he is happy!