This holder is 3.5" wide on both models. One is open in order to fit all types of pens and pencils and has a height of 3.52in. This Open faced holder has 3 wall loops and a 15%infill. The other model has holes with a .39in or 10mm with a total height of 3.85in. This Holed model has 3 wall loop with a 4 top shell layers and a 10% infill. Please let me know if you have any questions, comments, or concerns!