BookFactory&reg; Pool Chem Log Book / Journal / Logbook - 120 Page, 8.5"x11", Black Hardbound (XLog-120-7CS-A-L-Black(Pool Chem Log Book)) Ruled Pages with Page Numbers and Fields for Subject, Date and Book Number Hard Bound Book with Reinforced Imitation Leather Cover, and Placeholder Ribbon Smyth Sewn - Books lies flat when open; Archival Quality, Acid-Free Paper Page Dimensions: 8.5" X 11" (21.6cm X 25.4cm )