An easy DIY install. The valence is magnetically attached to the blind. If you have support brackets along the length of the blind, make sure the back of them are equi-distant from the window as is the back of the end brackets. My only complaint is that the end-of-blind drawstrings for raising/lowering the blinds (4 of them on a 70" x 40" window) are VERY long; i.e., they hang well below the window sill.