Rediform National Laboratory Notebook, 4 x 4 Quad Ruling, Gray Cover, 11" x 9.25" 100 Numbered Sets (43644)Stitched binding Durable, rigid gray cover White and blue paper, second sheet is micro perforated 100 Numbered Sets Duplicate paper includes white and blue pages with the second sheet micro perforated and is 4 x 4 quad ruled. Item Number: 43644 Dimensions: 10. 9 x 9. 2 x 0. 7 inches Weight: 1. 9 lb Rediform Inc. is one of the world's largest printers of business forms, part of Dominion Blueline Inc., and a world class manufacturer. In 1998 Dominion