Milgard stands behind every window and patio door they build.  Their warranty promises they will repair or replace any defective window, door or skylight free of cost to the original homeowner. Parts and labor included. Their warranty ranges from 10 years for commercial applications to a Full Lifetime Warranty for homeowners. It's no hassles, no hidden costs, and no headaches.
Visit their website for more information about all of their window and door styles available.