The problem technically speaking is not that the description of any product is "too long" but rather when two products are adjacent to one another and one has a longer displayed description than the other, the height of the longer description is not factored into the height of the shorter one.

This is should be resolved through the use of the match height portion of the template which is supposedly a part of the current version of this template at least as identified in this post found by searching on the word height: https://www.zen-cart.com/showthread....ht#post1310587