Used many window tints for commercial space windows, some are easier than others but I would give a 4 star out of 5 starts simply because it took forever to get ahold of the backing. Went On Easy, Does Wrinkle Easy. Will Buy Again.... I Had Ordered 4 Panels, One is Not The Same Tint As I Ordered 35% But One Is a 20%... Didn't See The Difference Till It Was Already Installed. Make: Office Windows Model: Commercial Space Year: N/A