I bought a 4t its a nice addition to the fishing arsenal. The floor as 4 holes, you could easy add more if you wanted. I only use the floor when extremely cold out. You can heat it with a match with floor installed. Quality is great, windows are pretty much worthless as they are small and located too high if you want to look outside at tip ups, however it is one less thing to break or let cold air in as well. There is a port for running your propane line through the house which is nice. The bag is nice it basically wraps around the house and you lash it shut so no zippers to deal with when its cold out. The light colored fabric is nice as you don't need light until it is really dark out.