I DON'T KNOW THE AGE OF THESE. THEY HAVE NEVER BEEN OUT OF THE PACKGING SO THEY ARE IN EXCELLENT CONDITION. YOU WILL GET 2 PICH PLEATED PANELS. I HAVE 4 SETS OF THE 75X63 AND 2 SETS OF THE 50X63 AVAIL AND WOULD BE HAPPY TO COMBINE TO SAVE ON SHIPPING