We bought this to use as a large doghouse for 4 dogs who like to sleep together in a pack and will not sue the smaller igloo dog houses.  I think it is going to work well for that purpose this winter once we install a dog door on it and add a little more insulation inside.  Perfect for what we were looking for.  I gave it 4 out of 5 stars because the walls are not very thick there is not a lot of weight to this structure but overall it is a good quality plastic building for the price.