Pina Zangaro Machina Aluminum 3-Ring Binder for 11 x 17 Inch Landscape Sheets, 1/2-Inch Capacity (36313) Attention-getting design, practical functionality Lightweight at just 30 ounces Capacity: 1/2, or 90 sheets (20 lb paper), landscape orientation; Exterior dimensions: 11.8 x 18.5 x 1 inches Made in the USA of scratch-and-dent-resistant .040 recycled anodized aluminum By Pina Zangaro, leader in document presentation and archiving solutions since 1989