Carri Lite Miniature Panels are four rails with maximum 6″ spacing between rails to prevent minis from getting head in between rails. Made of HDPE engineering grade resin, these panels are durable. Hydraulic pressed fittings and ultrasonic welded couplers provide security. Panels collapse down to 1/5th their size for convenience in transportation and storage. complete 12ft round pen fits in the back seat of a car! Mini panels come with 2 leg adjustments for use with regular horses. Panels ship UPS ground for delivery right to your door. Available in 3 colors; WHITE, PINK and TAN. Carri Lite Corrals come with a 30 day satisfaction guarantee and one year warranty.