DO NOT, DO NOT BUY THESE WINDOWS NOTHING BUT HEADACHES SINCE WE BOUGHT THESE IN 2005 NEVER HAD ALL THE WINDOWS OPEN AT ONCE. NEW SCREENS EVERY WEEK (THEY KEEP BLOWING OFF) THE LAST SET OF WINDOWS BROUGHT OUT 2 WERE BROKEN BEFORE THEY EVEN GOT THEM UP.. GAPING HOLES,(WHERE THEY DID NOT INSULATE) BIG ENOUGH TO BLOW OUT A CANDLE. NOTHING BUT RUDENESS FROM THE HIRED HELP.CALLED THE BBB NOT MUCH HELP THERE EVEN CALLED RUTH TO THE RESCUE.. NOTHING LEFT NOW BUT TO TAKE THEM TO COURT..DO NOT BUY THESE PLEASE