Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Ex-pen with door

I use this to crate my great dane and save hundreds not buying a crate. With my biggest dane I have to anchor this to the wall to keep him from knocking it over (but he is 200lbs of puppy) but worth it no having to invest 250+ in a crate he'll be squished in. My other danes don't bother knocking it over. Great size, great quality!