box spring

US /ˈbɑːks sprɪŋ/
UK /ˈbɑːks sprɪŋ/
"box spring" picture
1.

Federrahmen, Boxspring

a mattress foundation consisting of a sturdy wooden frame covered with cloth and containing springs, designed to support a mattress and absorb shock

:
The new bed came with a mattress and a matching box spring.
Das neue Bett kam mit einer Matratze und einem passenden Federrahmen.
You need a sturdy box spring to properly support your memory foam mattress.
Sie benötigen einen stabilen Federrahmen, um Ihre Memory-Foam-Matratze richtig zu stützen.