Multi-ways of Using Pin Style Merax Black E-Coat 24"/30"/36"/42"/48" Dog Exercise Playpen Easy to set up and ideal for outdoor and indoor use Black E-Coat finishresists rust and corrosion, can use for several years Every panel can be separated and can be a combination of freedom to meet different needs The door with two lathes to protect pet from escaping Arc design of the top ensure the security of your lovely and yourself