Pina Zangaro Machina Window Presentation Folder Anodized Aluminum/Clear (44302THIN) The Machina Window Presentation Folders feature a full-cover polycarbonate window so you can show off your presentation before even taking it out of its packaging. Made of scratch-resistant archival quality anodized aluminum, the folder contains no binding mechanism and is designed to hold loose or bound sheets. Material: Clear Anodized Aluminum Dimensions: 11.75 x 9 x .375 inches Window dimensions: 10.125 x 7.125 inches