Yes, usually 3 screws through the valence header from behind the blind up into the overhead cabinet. I use a ratchet screw-driver and a 8" extension. Most of mine were regular Phillips head deck screws, but I did find a couple of *#&$ square slot screws in the mix. The first time, I just felt along the header to find the screws. Some were sunk into the fabric wrap and barely visible.
2017 Coachmen Orion, Ford Transit 3.7L: previous
'09 Pleasure Way Lexor, '05 NRV Dolphin 5342