Perforated Paper 8-1/2" X 11", Perfed 5-1/2" From Bottom 20#
Amazon.com : Oxford Filler Paper, 8-1/2" x 11", Graph Rule (4x4), 3-Hole Punched, 800 Sheets of Loose-Leaf Paper for 3 Ring Binders, 2 Packs of 400, White (62333) : Office Products
Amazon.com : NextDayLabels - Pack of 500 Sheets, 8-1/2 x 11" Letter Size Perforated Paper (White, Perf @ 5-1/2") : Office Products
Sustainable Earth Filler Paper 8 1/2" x 11" Graph Ruled 100 Sheets TR25139M/25139 - Walmart.com
8-1/2" x 11" Piper's Pattern Paper Sheet | Making Supplies