Eric,

As others said, yes, it's replaceable. I just found out as I have 3 broken window panes after the neighbor kid weed-whacked the yard for me. Also, check to see if you have the Milguard line that includes the breakage warranty. Two of my co-workers have Milgaurd windows, and had the breakage warranty included. Naturally, mine don't. Oh well . . .

Sg