Couch Wall Spacer (Bob's Libre 2)
thingiverse
I built this to prevent my couch from getting shoved into the wall - the AC inlet vent is right behind it. This is designed specifically for the Bob's Libre 2 Couch (https://www.mybobs.com/living-room-furniture/living-room-sets/libre-ii-2-piece-left-arm-facing-sectional), but it could likely be modified to fit other couches as well.
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