Pina Zangaro MACHINA Aluminum Screwpost Portfolio (Deluxe Set - 11"x 17" Landscape Orientation) - Includes Professional Quality Portfolio (Anodized Aluminum Covers with Aluminum Hinges) + 15 Ultra-Clear Archival Sheet Protectors (30 sides) + Screwpost Extensions. Designed for High Impact Presentation of Photographs, Advertising, Graphic Design, and / or Marketing Materials Sleek and Modern Anodized Aluminum Covers For a Fresh, Up-To-Date Look Screwpost Design With Aluminum Hinges For Long Lasting Durability and a Distinctive, Modern Look  This Presentation Book Really Dresses Up Your Portfolio! This Complete Deluxe Set Includes The Hinged Covers, 15 Matching Acid-Free Page Protectors and a Set of Screwpost Extensions, Allowing You to Exhibit 30 Sides Right Out of the Box Without Having to Hunt For Compatible Accessories Included Screwpost Extensions Allow for Expansion Up To 30 Pages (60 sides)  Additional Sheet Protectors Are Available in 5-Packs (Item PZ-ESP1117)