HOLY EASY! I seriously thought this would be harder. The whole process probably took 30 mins and that includes walking around my house measuring 15 windows and 2 sliders! I do wish the pics of the slats were slightly larger because I'm not 100% certain that I'll love what I chose... but they are ordered and now we will finally have those updated blinds I've wanted for the last several years so I'll live with my choice regardless. Woohoo!