Moulded into the glass on the side of the tube you will see a number like V-100 or V-110. If these numbers are not the same, it will not work because the yokes are not compatable on the two tubes. The other difference will be the position of the mounting tabs on the corners of the tube. Otherwise, electronically it should work fine. Before you start this project, however, you should realize that changing the tube is not just a matter of taking one out and putting a new one in. By changing the yoke, you may have to readjust the purity and convergence and this is not a simple task unless you are experienced at it. Good Luck