I agree with Maxxx, that is atrocious! If you want to provide the best customer service possible, you should sit on orders for 3-5 days so you can be absolutely sure that there won't be any buyer's remorse! Sounds like Petra's really needs to work on their customer satisfaction. I bought 4 SL's from Petra's to put in my fan panel of my Stacker 830, and just sold the case along with the fans to an employee of mine. I bought 4 SM's to replace them, and I'll be running them through a Sunbeam fan controller. I'll let you guys know how they work out. I couldn't believe my SL's, the only way I could hear them was putting my ear next to the side panel, and even then it was nothing more than a faint, low pitched wind noise. Whew, i still can't believe that package got here from Petra's in 5 days!