I HAVE FOR SALE AN UNOPENED BOX OF 25 SHEETS OF KODAK PROFESSIONAL HIGH SPEED INFRARED FILM. THIS HAS BEEN STORED IN A CHEST FREEZER IN OUR DARK ROOM SINCE PURCHASED. I RECENTLY SHOT SOME IMAGES WITH THE LAST SHEETS OF FILM FROM A BOX OF THE SAME LOT AND IT WORKED AS EXPECTED. GREAT FOR LANDSCAPES AND PORTRAITURE.