Matte aluminum - This is a matte photo on an aluminum backing. It is our most low glare option, perfect for rooms with lots of windows and glare. To make a matte aluminum print, instead of printing on a sheet of paper, we print on a sheet of aluminum coated with an emulsion. A UV blocking coating is then applied to protect it from fading, and it is rated to be archival for over 100 years. Because there is no glass or acrylic on top of the photo, there is basically no glare at all. The flip side of this is that the image surface is not protected by acrylic against potential damage (e.g. kids throwing balls in the house, food fights, etc), so please bear this in mind if choosing this option. It is a great option for window-filled rooms with the potential for glare, but perhaps not the best option in a house filled with rambunctious young children....