Since 1952, TOPS has provided quality products and services to businesses throughout the world. TOPS continues that commitment providing innovative, high quality value-added products for the office, school and home. TOPS Semi-Monthly Time Cards are made with sturdy heavyweight 143 lb. manila stock. With screened in and out boxes for a quick check of hours worked, total out and in registration lines to give a net time worked, these cards have fronts printed in green ink while backs are printed in red ink. Measuring 3.5 x 10.5 inches, the TOPS Semi-Monthly Time Cards are available 500 cards per box. These professional-looking time cards replace card numbers L34B, 10-100372 , and CH131. Time Clock Compatibility: 125R, 150R, 1000, 10000, 2100/4000, KCF, KCG, JCG, JCP, 2500(r). Whether it's notebooks, writing pads, record books, time cards, or any of the hundreds of items we offer, you can count on TOPS products to help.