Just in case you're still not clear, Fuji makes two sizes of film packs. The smaller one fits in the Polaroid 405 holder. I don't believe Fuji even makes a holder for this film themselves. This film gives a 3.25 x 4.25 inch image. The larger film gives a 4x5 image and is compatible with the Fuji holder and the Polaroid 550 holder. The price difference is roughly $12 for the smaller and $30 for the larger. Each pack gives 10 images. The Polaroid 545 individual sheet holder is incompatible with either size.