worked for penguin for many years as installer. I saw more corruption here than anywhere else in my life. The bottom line at penguin is money. Of course, they're not the only ones, but its pretty bad. Management cares nothing for worker morale, safety, benifits or problems. I have seen so many laws broken at penguin its sad. And whats really crazy is that they don't seem to care that they break the law. As an installer I have seen many OSHA violations, as well as building code violations. Management will tell lead installers to ignore rot, mismeasured windows, misordered windows and all sorts of unethical business tactics. If you can cover it up, do it. I once witnessed an elderly couple get ripped off for an extra 1500 dollars in sales tax. It stated on their contract that penguin would pay the sales tax (1500 dollars worth and probably an extra incentive to get them to buy) but the sale rep had come back later and got them to sign a new contract, one that left out the part about penguin paying the sales tax. So when the work was all done, and it came down to paperwork, they were unhappy that the total price was more than they were told it would be. They showed us their copy which had the addendum stating that penguin would pay the tax. But of course our copy had no such thing. The lady was in tears and we left the jobsite feeling like crap. When we told the head manager about it he said "well, thats business for you". This is just one example of the hundreds of stories from MANY installers that show Penguins contempt. So far all the stories I've read on here have been pretty accurate. Except for one posting that sounds like a corporate rep or sales rep defending the product and company. You wanna know who else offers triple pane window with krypton and all the goods "GREAT LAKES WINDOWS". That is the manufacturer of the windows penguin installs and for some reason ($$$$$$$) they put penguins name on the locks. Do not be fooled, when a sales rep shows up at your door, check for the wolf fur poking out the sheeps clothing. He is selling great lakes windows. penguin is not your only option. And if your house already has vinyl windows in it, YOU DON'T NEED NEW WINDOWS. Especially not from penguin. These are crooked, corrupt, greedy people with unstoppable avarice. There are few good employees at this company. They're there, but rare. So remember, from someone who saw it with his own eyes in so many situations, buy somewhere else.