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Interior Design Explained
Learn the language of interior design with our free glossary
Drop-In Spring Unit
A drop-in spring unit is a pre-assembled spring system used in upholstered furniture for support and comfort.
Inner Quilt
A layer of padding enclosed between the outer fabric and lining of a piece of upholstered furniture.
Sinuous Springs
Sinuous springs are S-shaped springs that are used in upholstered furniture to provide support.