floating shelf
US /ˈfloʊtɪŋ ʃɛlf/
UK /ˈfloʊtɪŋ ʃɛlf/

1.
prateleira flutuante, prateleira invisível
a shelf that is attached to a wall with no visible supports, giving the appearance of floating
:
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We installed a floating shelf in the living room to display books.
Instalamos uma prateleira flutuante na sala de estar para exibir livros.
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The minimalist design of the floating shelf complements the modern decor.
O design minimalista da prateleira flutuante complementa a decoração moderna.