they are double pane, tilt in with Reynolds written on the latches only. I need to get a broken pane replaced
http://www.reynoldsbp.com/
Also found warranty info that may apply to you:
http://reymedia.atriumwindows.com/Warranties/Reynolds%20Series%206000.pdf
THE WINDOW MOST LIKELY HAS A WARRANTY FOR 10 YEARS TO LIFETIME. IF YOU EXERCISE THE WARRANTY YOU COULD HAVE JUST MATERIAL PAID FOR OR SOME HAVE MATERIAL AND LABOR PAID. I HAVE NOT EVER USED A WARRANTY ON A WINDOW BUT IF YOU PICK UP A BROCHURE OR TALK TO ANY SALES PERSON, THEY WILL TELL YOU. THE FIRST THING IS TO DETERMINE THE MANUFACTURER AND MODEL NUMBER, THE REST WILL FOLLOW.