This short grid is great for offsetting onto a full size grid to create a smaller hole that babies and young guinea pigs can't get through. We use them in the divided cage to create windows for socialization and on the corral for floortime. This allows the recently neutered daddy and the young males to participate in floortime with their mom and sister but still have a reliable divider that prevents mingling of males and females. It's pricey to start but worth every penny since they will be used daily for 6 months or so to do floortime.