They advertise a lifetime warranty but note: Warranty is not transferable. Also warranty does not cover parts, labor, workmanship or functionality. I called customer support days after registering and they said they could find no record of my registration. They asked for a sales receipt (for a shower door my contractor ordered.) BTW - My call to them was because the door was leaking badly. I was just hoping for a replacement seal. They said it sounds like it was their cheaper model door and they don't warranty against leaks.