I'm sure you know what "unit" you own is... but we're not very skilled at guessing.
Can you provide the year, model, floorplan of your RV? That would help and it's pretty much something you'll need to do for every question or reference you make on here. So, most of us put this info into our Signature in our Profile.
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2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
it,s a pain but worth it, remove the screws at top , snap out mid support, drop down don't tangle up cords, we took ours to the bathtub with soap and 10% bleach, laid on shop bench , to dry , rehung , lot of work but worth it , plan on a 2 day job
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2006 journey 36 se /highlander
super co-pilot karen
navigator corgi kringle
If the night part of the shade is a heavy paper backed fabric don't wash it. I disassembled our day/night shades and just washed the day shades in the bath tub with Oxyclean, rinsed them with a hand held shower head, then laid them out on a bath towel. I pleated them almost closed and let them dry, then reassembled the shade. This method does require restringing the shades. I also washed the front window pleated shades in the bathtub with oxyclean, rinsed with hand held shower head, and laid on towel, pleated nearly completely closed until dry. I did prespot all dirty areas with Resolve and a toothbrush.