Bottom wire is 14g. 1/2"x1" Galv. after welding and has 4" urine guards.. Plastic tray only. The kit is shippable. Clips and rings included. You will need clip pliers. These cages are knocked down for cheaper shipping. Trays are slide out. 4" high urine guards on sides and back. All Premium Cages have babysaver wire on the front.