Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A 'NO FEAR' DOOR FLAP!

Good quality, easy to install, and clear visibility! We have two of these door flaps. Because we seal off our home to save heat and /or AC, this was a great way to let our cats get to the basement while keeping the doors closed. We have a cat similar to the one shown, that is a bit over weight and very timid. This pet door is large enough to see what's on the other side with plenty of room to get through without a struggle, so even he isn't afraid. Our energy bills have dropped considerably by using these.