We had 2 retriever mix dogs who were tipping the scales at 70 pounds each. We had
Midwest Metals Life Stages Double Door Dog Crate 42 X 28 X 31 for those dogs and were very satisfied with the quality.
When we rescued a third, we needed to get another crate but the Midwest wasn't available so we opted for this crate. At the time, our rescue, despite being "full-grown" was only about 45 pounds and yet, he was able to get the crate to collapse on him and "escape" on two separate occasions. Not only was this sub-optimal from a safety standpoint (at least he only "escaped" within the confines of the house and we didn't have him outside in this thing), if we wanted him to be able to go "free-range" throughout the house, we wouldn't have bothered with the crate in the first place.
We have since "reinforced" the crate with those plastic
4" Plastic Cable Zip Ties 100-Pack (Black) which at least keeps the crate together (though it no longer is "portable" since we can't collapse it) and it works ok -- even though Scooter has since put on 25 pounds and is in the 70-pound range right there with his "brothers".
Overall, it is doing the job -- however for the price, the quality just isn't as solid as the Midwest crate and we won't be buying another one.