Spine Sizes

For best results, match the cover capacity size to the number of sheets to be inserted.

Below is a guide for 20# bond paper. The number of sheets will vary with the thickness of paper being bound. The best fit will be obtained by measuring the thickness of the book block.

Number of Sheets To Be Inserted	Cover Size Recommended
1-10	1/16"
5-15	3/32"
10-25	1/8"
25-50	1/4"
40-75	3/8"
65-100	1/2"
90-125	5/8"
115-150	3/4"
130-200	1"
180-250	1 1/4"
230-300	1 1/2"
280-340	1 3/4"