Scientific Notebook Company Flush Trimmed, Research Laboratory Notebook, 192 Pages, Smyth Sewn, 9.25 X 11.25, 4x4 Grid (Black) Smyth Section Sewn pages, Flush trimmed Cover with rounded corners. 192 numbered pages with 1/4 grid and signature blocks. Pages printed front and back. Issuance page, Instruction page, and Table of Contents Pages Black Cover 9 1/4" x 11 1/4" 60 pound acid free archival paper.