Moeller Marine Battery Tray for Group 29 & 31 Series Batteries - Heavy Duty Plastic Boat Battery Holder - Perfect for Marine, RV, and Off-Grid Power Storage Applications

This is a well made product, but as you can see from the picture I added it was too big for my Autocraft group 29 batteries. In order to secure the batteries I added spacers cut from plywood and was pleased with the outcome. The product claims to be for group 29 batteries. Maybe battery manufacturers have different sizes for group 29s. I also bought one of the group 24 trays for my starting battery and it fit perfectly.