Alright so let me explain my 1 star review and why I've chosen this.#1. My filter came basically smashed to pieces in the mail. I understand this is most likely not the fault of this store, but none the less it's a contributing factor. It was expensive so I taped it up and installed it because I needed a filter asap as my heater was malfunctioning. #2. This is less about the product and more about the website. I only am writing this 1 star review because of the relentless spam email I am getting from this website. Are you kidding me? I've gotten about 6 reminders to "review" my order. It's a air filter, what am I supposed to say? "It filters air so good!". Yea, I'm sure it does its job. What am I gonna review next, that gas that I put in my car? Quit spamming me