The National Brand 43-649 Laboratory Research Notebook is a reliable and high-quality lab notebook designed for research and documentation purposes. This notebook features a quad-ruled design with 4 x 4 squares, making it easy to organize and record experimental data. With dimensions of 9-1/4 x 11", it provides ample space for notes and diagrams. Made by a trusted brand in the United States, this lab notebook ensures that your research and findings are accurately documented and readily accessible for reference and analysis.