No, not needed
It's affixed to the window sill
Hello...Thank you for reaching out. The shade material, the light options as well as your color selections are all factors that need to be considered in order to determine which is best for your particular application. You may want to consider either our Original Blackout shades or something in light blocking or blackout from our Easy Lift collection. We invite you to visit our website or reach out to firstname.lastname@example.org for further information. Redi Shade Customer Care
I don’t recall if it’s 4 clips per shade or 3 clips per shade, but there ARE enough clips for all of them. I’m very happy with this product that I bought more than a year ago.
The clips are included.
you can put some two-sided tape on the bottom and attach it to window or sill
Gray room darkening
One side. Peak off protective strip and stick to desired surface. If the surface is smooth and clean, adherence is good.
They are multidimensional.