Morvat panels are a solid choice if you want less dust and fewer imperfections on the wall.
Morvat 10×10 Access Panel with Door for Drywall & Ceiling
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Items
Envisivent Removable Magnetic Mud-In Flush Mounted Wall/Ceiling Air Supply Vent
What stands out about Envisivent is the lightweight yet durable core.
Fittes Flush W.C. Niche [Luxe]
I noticed that Fittes panels have very little dust when you sand them down.