Everyone has seen these frosted window decals on a front door or sliding door. We've literally sold thousands and thousands of these palm tree decals. The palm tree sticker clings to any smooth glass or plastic surface. Many customers use the left and right leaning palm tree on both sides of their patio doors. Or, if you like the center or reverse better, no reason you cannot use 2 of the same on both doors. If you happen to have a triple sliding door, use all three of the palms. You'll not only have a beautiful alternative to to real etched glass windows, you might just save a friend or family member the pain and embarrassment of walking into the glass.