MidWest Homes for Pets LifeStages Exercise Pen Full MAXLock Door 36H x 24W Inches Black Exercise Pen with Maxlock Door Door splits in half to allow you to open just the top half, great for puppies Easy to Set-up, No Tools RequiredAvailable in 5 Different Sizes and Provides 16 sqft of Exercise Area Includes Ground Stakes and Corner Stabilizers for Extra Security Not Recommended for Puppies or Dogs That Jump