Where?: Portra Endura "N" 16 x 20 or larger?

Kodak has discontinued the Portra Endura paper for sizes larger than 11 x 14, but this is my favorite paper. Does anyone know where I can get some 16 x 20" or larger boxes of this paper?

Boxes? You might have to buy a roll and cut it yourself.

I haven't found a roll in the N surface either.

Hmm, Portra Endura appears to be silently disappearing off Kodak's website. Discontinued without notice, the new Kodak way? Only Supra Endura, Supra Endura VC, and Endura Metallic are still listed. B&H still lists Portra Endura as special order, but only in roll sizes.

Well, I suppose so much of their customer base is printing to these papers digitally, that they can just reduce saturation in Photoshop. So much for optical printers who want an "honest" paper, which Portra Endura is.