The Petmate Courtyard Exercise Pen provides a safe and secure outdoor kennel for pets. Featuring a drop-pin design and ground stakes, the Courtyard kennel stays safe and secure for worry-free use. Made with rust-resistant, galvanized steel, the pen stays strong and durable for long-lasting protection. The pen includes long and short pins that can be adjusted for different environments and soils for versatile outdoor use. The pins slide into position easily for quick, no-tool assembly. The walk-in locking door provides easy access for pets and pet parents. The panels of the dog kennel pen can be easily removed or added to make a small kennel or large kennel in various shapes. The pen's silver crackle finish provides a sleek addition to the backyard.